chore(deps): update davidanson/markdownlint-cli2-action action to v20

This patch extends dcmerge to support the command attribut of a defined service.
For example:

```yaml
services:
  busybox
    command: [ "/usr/bin/cp", "--recursive", "--force", "/tmp/bar.txt", "/tmp/foo.txt"]
    image: library/busybox:latest
```

The command attribute is interpreted as a whole. This means that individual
arguments are not merged as a comparison, as this would change the meaning of
the command attribute.

.drone.yml

@@ -1,727 +0,0 @@
----
-kind: pipeline
-type: kubernetes
-name: linter
-
-clone:
-  disable: true
-
-platform:
-  os: linux
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: markdown lint
-  commands:
-  - markdownlint *.md
-  image: git.cryptic.systems/volker.raschek/markdownlint:0.43.0
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  event:
-    exclude:
-    - tag
-
----
-kind: pipeline
-type: docker
-name: unit-test-amd64
-
-clone:
-  disable: true
-
-platform:
-  arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: unit-test
-  commands:
-  - go test -v ./...
-  image: docker.io/library/golang:1.24.1
-
-trigger:
-  event:
-    exclude:
-    - tag
-
----
-kind: pipeline
-type: docker
-name: unit-test-arm64
-
-clone:
-  disable: true
-
-platform:
-  arch: arm64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: unit-test
-  commands:
-  - go test -v ./...
-  image: docker.io/library/golang:1.24.1
-
-trigger:
-  event:
-    include:
-    - pull_request
-    - push
-    exclude:
-    - tag
-
----
-kind: pipeline
-type: docker
-name: dry-run-amd64
-
-clone:
-  disable: true
-
-depends_on:
-- linter
-- unit-test-amd64
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: false
-    dockerfile: Dockerfile
-    dry_run: true
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    tags: latest-amd64
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-    exclude:
-    - master
-  event:
-  - pull_request
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: docker
-name: dry-run-arm64-v8
-
-clone:
-  disable: true
-
-depends_on:
-- linter
-- unit-test-arm64
-
-platform:
-  os: linux
-  arch: arm64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: false
-    dockerfile: Dockerfile
-    dry_run: true
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    tags: latest-arm64-v8
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-    exclude:
-    - master
-  event:
-  - pull_request
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: docker
-name: latest-amd64
-
-clone:
-  disable: true
-
-depends_on:
-- linter
-- unit-test-amd64
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: false
-    dockerfile: Dockerfile
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    tags: latest-amd64
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-  - master
-  event:
-  - cron
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: docker
-name: latest-arm64-v8
-
-clone:
-  disable: true
-
-depends_on:
-- linter
-- unit-test-arm64
-
-platform:
-  os: linux
-  arch: arm64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: false
-    dockerfile: Dockerfile
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    tags: latest-arm64-v8
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-  - master
-  event:
-  - cron
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: kubernetes
-name: latest-manifest
-
-clone:
-  disable: true
-
-depends_on:
-- latest-amd64
-- latest-arm64-v8
-
-# docker.io/plugins/manifest only for amd64 architectures available
-node_selector:
-  kubernetes.io/os: linux
-  kubernetes.io/arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build-manifest
-  image: docker.io/plugins/manifest:1.4.0
-  settings:
-    auto_tag: false
-    ignore_missing: true
-    spec: manifest.tmpl
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-  - master
-  event:
-  - cron
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: kubernetes
-name: latest-sync
-
-clone:
-  disable: true
-
-depends_on:
-- latest-manifest
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: latest-sync
-  commands:
-  - skopeo sync --all --src=docker --src-creds=$SRC_CRED_USERNAME:$SRC_CRED_PASSWORD --dest=docker --dest-creds=$DEST_CRED_USERNAME:$DEST_CRED_PASSWORD git.cryptic.systems/volker.raschek/dcmerge docker.io/volkerraschek
-  environment:
-    SRC_CRED_USERNAME:
-      from_secret: git_cryptic_systems_container_registry_user
-    SRC_CRED_PASSWORD:
-      from_secret: git_cryptic_systems_container_registry_password
-    DEST_CRED_USERNAME:
-      from_secret: container_image_registry_user
-    DEST_CRED_PASSWORD:
-      from_secret: container_image_registry_password
-  image: quay.io/skopeo/stable:v1.18.0
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  branch:
-  - master
-  event:
-  - cron
-  - push
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: docker
-name: tagged-amd64
-
-clone:
-  disable: true
-
-platform:
-  os: linux
-  arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: true
-    auto_tag_suffix: amd64
-    dockerfile: Dockerfile
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-    build_args:
-    - VERSION=${DRONE_TAG}
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  event:
-  - tag
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: docker
-name: tagged-arm64-v8
-
-clone:
-  disable: true
-
-platform:
-  os: linux
-  arch: arm64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build
-  image: docker.io/plugins/docker:20.18.7
-  settings:
-    auto_tag: true
-    auto_tag_suffix: arm64-v8
-    dockerfile: Dockerfile
-    force_tag: true
-    no_cache: true
-    purge: true
-    mirror:
-      from_secret: docker_io_mirror
-    registry: git.cryptic.systems
-    repo: git.cryptic.systems/volker.raschek/dcmerge
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-    build_args:
-    - VERSION=${DRONE_TAG}
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  event:
-  - tag
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: kubernetes
-name: tagged-manifest
-
-clone:
-  disable: true
-
-depends_on:
-- tagged-amd64
-- tagged-arm64-v8
-
-# docker.io/plugins/manifest only for amd64 architectures available
-node_selector:
-  kubernetes.io/os: linux
-  kubernetes.io/arch: amd64
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: build-manifest
-  image: docker.io/plugins/manifest:1.4.0
-  settings:
-    auto_tag: true
-    ignore_missing: true
-    spec: manifest.tmpl
-    username:
-      from_secret: git_cryptic_systems_container_registry_user
-    password:
-      from_secret: git_cryptic_systems_container_registry_password
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  event:
-  - tag
-  repo:
-  - volker.raschek/dcmerge
-
----
-kind: pipeline
-type: kubernetes
-name: tagged-sync
-
-clone:
-  disable: true
-
-depends_on:
-- tagged-manifest
-
-steps:
-- name: clone
-  image: git.cryptic.systems/volker.raschek/git:1.4.0
-
-- name: tagged-sync
-  commands:
-  - skopeo sync --all --src=docker --src-creds=$SRC_CRED_USERNAME:$SRC_CRED_PASSWORD --dest=docker --dest-creds=$DEST_CRED_USERNAME:$DEST_CRED_PASSWORD git.cryptic.systems/volker.raschek/dcmerge docker.io/volkerraschek
-  environment:
-    SRC_CRED_USERNAME:
-      from_secret: git_cryptic_systems_container_registry_user
-    SRC_CRED_PASSWORD:
-      from_secret: git_cryptic_systems_container_registry_password
-    DEST_CRED_USERNAME:
-      from_secret: container_image_registry_user
-    DEST_CRED_PASSWORD:
-      from_secret: container_image_registry_password
-  image: quay.io/skopeo/stable:v1.18.0
-
-- name: email-notification
-  environment:
-    SMTP_FROM_ADDRESS:
-      from_secret: smtp_from_address
-    SMTP_FROM_NAME:
-      from_secret: smtp_from_name
-    SMTP_HOST:
-      from_secret: smtp_host
-    SMTP_USERNAME:
-      from_secret: smtp_username
-    SMTP_PASSWORD:
-      from_secret: smtp_password
-  image: git.cryptic.systems/volker.raschek/drone-email:0.1.5
-  resources:
-    limits:
-      cpu: 150
-      memory: 150M
-  when:
-    status:
-    - changed
-    - failure
-
-trigger:
-  event:
-  - tag
-  repo:
-  - volker.raschek/dcmerge

.gitea/workflows/golang-tests.yaml

@@ -0,0 +1,24 @@
+name: Golang Tests
+
+on:
+  pull_request:
+    types: [ "opened", "reopened", "synchronize" ]
+  push:
+    branches: [ '**' ]
+    tags-ignore: [ '**' ]
+
+jobs:
+  unittest:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        go: [ stable ]
+        os: [ ubuntu-latest-amd64, ubuntu-latest-arm64 ]
+    steps:
+    - uses: actions/checkout@v4.2.2
+    - uses: actions/setup-go@v5.5.0
+      with:
+        go-version: ${{ matrix.go }}
+    - env:
+        GOPROXY: ${{ vars.GOPROXY }}
+      run: make test/unit

.gitea/workflows/golangci-lint.yaml

@@ -0,0 +1,27 @@
+name: Golang CI lint
+
+on:
+  pull_request:
+    types: [ "opened", "reopened", "synchronize" ]
+  push:
+    branches: [ '**' ]
+    tags-ignore: [ '**' ]
+
+permissions:
+  contents: read
+
+jobs:
+  golangci:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        go: [ stable ]
+        os: [ ubuntu-latest-amd64, ubuntu-latest-arm64 ]
+    steps:
+    - uses: actions/checkout@v4.2.2
+    - uses: actions/setup-go@v5.5.0
+      with:
+        go-version: ${{ matrix.go }}
+    - uses: golangci/golangci-lint-action@v8.0.0
+      with:
+        version: v2.1

.gitea/workflows/markdown-linters.yaml

@@ -0,0 +1,18 @@
+name: 'Lint Markdown files'
+
+on:
+  pull_request:
+    types: [ "opened", "reopened", "synchronize" ]
+  push:
+    branches: [ '*' ]
+    tags-ignore: [ '*' ]
+
+jobs:
+  markdown-lint:
+    runs-on:
+    - ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4.2.2
+    - uses: DavidAnson/markdownlint-cli2-action@v20.0.0
+      with:
+        globs: '**/*.md'

.gitea/workflows/release.yaml

@@ -0,0 +1,52 @@
+name: Release
+
+on:
+  push:
+    tags: [ '**' ]
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on:
+    - ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4.2.2
+    - uses: docker/setup-qemu-action@v3.6.0
+    - uses: actions/setup-go@v5.5.0
+      with:
+        go-version: stable
+    - uses: docker/login-action@v3.4.0
+      with:
+        registry: git.cryptic.systems
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GIT_CRYPTIC_SYSTEMS_PACKAGE_REGISTRY_TOKEN }}
+    - env:
+        GITEA_TOKEN: ${{ secrets.GIT_CRYPTIC_SYSTEMS_PACKAGE_REGISTRY_TOKEN }}
+        GONOSUMDB: ${{ vars.GONOSUMDB }}
+        GOPROXY: ${{ vars.GOPROXY }}
+      uses: goreleaser/goreleaser-action@v6.3.0
+      with:
+        version: "~> v2"
+        args: release --clean
+
+  sync-to-hub-docker-io:
+    needs:
+    - release
+    runs-on: ubuntu-latest
+    steps:
+    - name: Copy images to docker.io
+      run: |
+        TAG=$(echo ${{ github.ref_name }} | sed 's/v//gm')
+
+        apt-get update --yes
+        apt-get install --yes skopeo
+        skopeo copy \
+          --all \
+          --dest-password ${{ secrets.DOCKER_IO_PASSWORD }} \
+          --dest-username ${{ secrets.DOCKER_IO_USERNAME }} \
+          --src-password ${{ secrets.GIT_CRYPTIC_SYSTEMS_PACKAGE_REGISTRY_TOKEN }} \
+          --src-username volker.raschek \
+            docker://git.cryptic.systems/volker.raschek/dcmerge:${TAG} \
+            docker://docker.io/volkerraschek/dcmerge:${TAG}

.gitea/workflows/update-docker-hub-description.yaml

@@ -0,0 +1,20 @@
+name: Update Docker Hub Description
+
+on:
+  push:
+    branches: [ 'master' ]
+    paths: [ 'README.md' ]
+  workflow_dispatch: {}
+
+jobs:
+  update-description-on-hub-docker-io:
+    runs-on:
+    - ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4.2.2
+    - uses: peter-evans/dockerhub-description@v4.0.2
+      with:
+        username: ${{ secrets.DOCKER_IO_USERNAME }}
+        password: ${{ secrets.DOCKER_IO_PASSWORD }}
+        repository: volkerraschek/dcmerge
+        readme-filepath: README.md

.gitignore

@@ -1,2 +1,3 @@
 dcmerge
-coverage.txt
+coverage.txt
+dist

.goreleaser.yaml

@@ -0,0 +1,175 @@
+project_name: dcmerge
+
+archives:
+- formats: [ "tar.xz" ]
+  files:
+  - README.md
+  - LICENSE
+
+before:
+  hooks:
+  - go mod tidy
+
+builds:
+- main: main.go
+  binary: >-
+    {{ .ProjectName }}-
+    {{- .Version }}-
+    {{- .Os }}-
+    {{- if eq .Arch "amd64" }}amd64
+    {{- else if eq .Arch "amd64_v1" }}amd64
+    {{- else }}{{ .Arch }}{{ end }}
+    {{- if .Arm }}-{{ .Arm }}{{ end }}
+  env:
+  - CGO_ENABLED=0
+  - GONOSUMDB={{ .Env.GONOSUMDB }}
+  - GOPROXY={{ .Env.GOPROXY }}
+  goos:
+  - linux
+  goarch:
+  - amd64
+  - arm
+  - arm64
+  - riscv64
+  goarm:
+  - "6"
+  - "7"
+  flags:
+  - -trimpath
+  ldflags:
+  - -s -w -X 'main.version={{ trimprefix .Tag "v" }}'
+
+changelog:
+  filters:
+    exclude:
+    - '^chore'
+    - '^docs'
+    - '^test'
+    - Merge pull request
+    - Merge branch
+    - go mod tidy
+  format: "{{.SHA}}: {{.Message}} (@{{.AuthorUsername}})"
+  groups:
+  - title: Features
+    regexp: '^.*?feat(\([[:word:]]+\))??!?:.+$'
+    order: 0
+  - title: "Bug fixes"
+    regexp: '^.*?fix(\([[:word:]]+\))??!?:.+$'
+    order: 1
+  - title: Others
+    order: 999
+  sort: asc
+  use: git
+
+dockers:
+- build_flag_templates:
+  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+  - --label=org.opencontainers.image.description={{ .ProjectName }}
+  - --label=org.opencontainers.image.documentation={{ .ProjectName }}
+  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+  - --label=org.opencontainers.image.source={{ .GitURL }}
+  - --label=org.opencontainers.image.title={{ .ProjectName }}
+  - --label=org.opencontainers.image.url=https://git.cryptic.systems/volker.raschek/{{ .ProjectName }}
+  - --label=org.opencontainers.image.version={{ trimprefix .Tag "v" }}
+  - --platform=linux/amd64
+  - --pull
+  dockerfile: Dockerfile
+  goarch: amd64
+  goos: linux
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-amd64'
+  skip_push: false
+  use: buildx
+
+- build_flag_templates:
+  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+  - --label=org.opencontainers.image.description={{ .ProjectName }}
+  - --label=org.opencontainers.image.documentation={{ .ProjectName }}
+  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+  - --label=org.opencontainers.image.source={{ .GitURL }}
+  - --label=org.opencontainers.image.title={{ .ProjectName }}
+  - --label=org.opencontainers.image.url=https://git.cryptic.systems/volker.raschek/{{ .ProjectName }}
+  - --label=org.opencontainers.image.version={{ trimprefix .Tag "v" }}
+  - --platform=linux/arm/v6
+  - --pull
+  dockerfile: Dockerfile
+  goarch: arm
+  goarm: "6"
+  goos: linux
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm-v6'
+  skip_push: false
+  use: buildx
+
+- build_flag_templates:
+  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+  - --label=org.opencontainers.image.description={{ .ProjectName }}
+  - --label=org.opencontainers.image.documentation={{ .ProjectName }}
+  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+  - --label=org.opencontainers.image.source={{ .GitURL }}
+  - --label=org.opencontainers.image.title={{ .ProjectName }}
+  - --label=org.opencontainers.image.url=https://git.cryptic.systems/volker.raschek/{{ .ProjectName }}
+  - --label=org.opencontainers.image.version={{ trimprefix .Tag "v" }}
+  - --platform=linux/arm/v7
+  - --pull
+  dockerfile: Dockerfile
+  goarch: arm
+  goarm: "7"
+  goos: linux
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm-v7'
+  skip_push: false
+  use: buildx
+
+- build_flag_templates:
+  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+  - --label=org.opencontainers.image.description={{ .ProjectName }}
+  - --label=org.opencontainers.image.documentation={{ .ProjectName }}
+  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+  - --label=org.opencontainers.image.source={{ .GitURL }}
+  - --label=org.opencontainers.image.title={{ .ProjectName }}
+  - --label=org.opencontainers.image.url=https://git.cryptic.systems/volker.raschek/{{ .ProjectName }}
+  - --label=org.opencontainers.image.version={{ trimprefix .Tag "v" }}
+  - --platform=linux/arm64
+  - --pull
+  dockerfile: Dockerfile
+  goarch: arm64
+  goos: linux
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm64'
+  skip_push: false
+  use: buildx
+
+- build_flag_templates:
+  - --label=org.opencontainers.image.created={{ time "2006-01-02T15:04:05Z07:00" }}
+  - --label=org.opencontainers.image.description={{ .ProjectName }}
+  - --label=org.opencontainers.image.documentation={{ .ProjectName }}
+  - --label=org.opencontainers.image.revision={{ .FullCommit }}
+  - --label=org.opencontainers.image.source={{ .GitURL }}
+  - --label=org.opencontainers.image.title={{ .ProjectName }}
+  - --label=org.opencontainers.image.url=https://git.cryptic.systems/volker.raschek/{{ .ProjectName }}
+  - --label=org.opencontainers.image.version={{ trimprefix .Tag "v" }}
+  - --platform=linux/riscv64
+  - --pull
+  dockerfile: Dockerfile
+  goarch: riscv64
+  goos: linux
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-riscv64'
+  skip_push: false
+  use: buildx
+
+docker_manifests:
+- name_template: 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}'
+  image_templates:
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-amd64'
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm-v6'
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm-v7'
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-arm64'
+  - 'git.cryptic.systems/volker.raschek/{{ .ProjectName }}:{{ trimprefix .Tag "v" }}-riscv64'
+
+gitea_urls:
+  api: https://git.cryptic.systems/api/v1
+  download: https://git.cryptic.systems
+
+version: 2

.markdownlint.yaml

@@ -56,8 +56,6 @@ MD013:
   tables: false
   # Include headings
   headings: true
-  # Include headings
-  headers: true
   # Strict length checking
   strict: false
   # Stern length checking
@@ -70,11 +68,6 @@ MD022:
   # Blank lines below heading
   lines_below: 1
 
-# MD024/no-duplicate-heading/no-duplicate-header - Multiple headings with the same content
-MD024:
-  # Only check sibling headings
-  allow_different_nesting: true
-
 # MD025/single-title/single-h1 - Multiple top-level headings in the same document
 MD025:
   # Heading level

.vscode/settings.json

@@ -1,3 +0,0 @@
-{
-  "rewrap.wrappingColumn": 120,
-}

Dockerfile

@@ -1,20 +1,5 @@
-FROM docker.io/library/golang:1.23.4-alpine3.19 AS build
+FROM scratch AS build
 
-RUN apk add git make
-
-WORKDIR /workspace
-ADD ./ /workspace
-
-RUN make install \
-      DESTDIR=/cache \
-      PREFIX=/usr \
-      VERSION=${VERSION}
-
-FROM docker.io/library/alpine:3.21
-
-COPY --from=build /cache /
-
-WORKDIR /workspace
-VOLUME [ "/workspace" ]
+COPY dcmerge-* /usr/bin/dcmerge
 
 ENTRYPOINT [ "/usr/bin/dcmerge" ]

Makefile

@@ -20,17 +20,12 @@ DCMERGE_IMAGE_NAMESPACE?=${DCMERGE_IMAGE_REGISTRY_USER}
 DCMERGE_IMAGE_NAME:=${EXECUTABLE}
 DCMERGE_IMAGE_VERSION?=latest
 DCMERGE_IMAGE_FULLY_QUALIFIED=${DCMERGE_IMAGE_REGISTRY_NAME}/${DCMERGE_IMAGE_NAMESPACE}/${DCMERGE_IMAGE_NAME}:${DCMERGE_IMAGE_VERSION}
-DCMERGE_IMAGE_UNQUALIFIED=${DCMERGE_IMAGE_NAMESPACE}/${DCMERGE_IMAGE_NAME}:${DCMERGE_IMAGE_VERSION}
 
 # BIN
 # ==============================================================================
 dcmerge:
 	CGO_ENABLED=0 \
-	GOPRIVATE=$(shell go env GOPRIVATE) \
 	GOPROXY=$(shell go env GOPROXY) \
-	GONOPROXY=$(shell go env GONOPROXY) \
-	GONOSUMDB=$(shell go env GONOSUMDB) \
-	GOSUMDB=$(shell go env GOSUMDB) \
 		go build -ldflags "-X 'main.version=${VERSION}'" -o ${@} main.go
 
 # CLEAN
@@ -43,15 +38,21 @@ clean:
 # ==============================================================================
 PHONY+=test/unit
 test/unit:
-	go test -v -p 1 -coverprofile=coverage.txt -covermode=count -timeout 1200s ./pkg/...
+	CGO_ENABLED=0 \
+	GOPROXY=$(shell go env GOPROXY) \
+		go test -v -p 1 -coverprofile=coverage.txt -covermode=count -timeout 1200s ./pkg/...
 
 PHONY+=test/integration
 test/integration:
-	go test -v -p 1 -count=1 -timeout 1200s ./it/...
+	CGO_ENABLED=0 \
+	GOPROXY=$(shell go env GOPROXY) \
+		go test -v -p 1 -count=1 -timeout 1200s ./it/...
 
 PHONY+=test/coverage
 test/coverage: test/unit
-	go tool cover -html=coverage.txt
+	CGO_ENABLED=0 \
+	GOPROXY=$(shell go env GOPROXY) \
+		go tool cover -html=coverage.txt
 
 # GOLANGCI-LINT
 # ==============================================================================
@@ -91,14 +92,13 @@ container-image/build:
 		--no-cache \
 		--pull \
 		--tag ${DCMERGE_IMAGE_FULLY_QUALIFIED} \
-		--tag ${DCMERGE_IMAGE_UNQUALIFIED} \
 		.
 
 # DELETE CONTAINER IMAGE
 # ==============================================================================
 PHONY:=container-image/delete
 container-image/delete:
-	- ${CONTAINER_RUNTIME} image rm ${DCMERGE_IMAGE_FULLY_QUALIFIED} ${DCMERGE_IMAGE_UNQUALIFIED}
+	- ${CONTAINER_RUNTIME} image rm ${DCMERGE_IMAGE_FULLY_QUALIFIED}
 
 # PUSH CONTAINER IMAGE
 # ==============================================================================

README.md

@@ -1,6 +1,5 @@
 # dcmerge
 
-[![Build Status](https://drone.cryptic.systems/api/badges/volker.raschek/dcmerge/status.svg)](https://drone.cryptic.systems/volker.raschek/dcmerge)
 [![Docker Pulls](https://img.shields.io/docker/pulls/volkerraschek/dcmerge)](https://hub.docker.com/r/volkerraschek/dcmerge)
 
 `dcmerge` is a small program to merge docker-compose files from multiple sources. It is available via RPM and docker.

cmd/root.go

@@ -19,16 +19,18 @@ func Execute(version string) error {
 		DisableFlagsInUseLine: true,
 		ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
 		Args:                  cobra.MatchAll(cobra.ExactArgs(1)),
-		Run: func(cmd *cobra.Command, args []string) {
+		RunE: func(cmd *cobra.Command, args []string) error {
 			switch args[0] {
 			case "bash":
-				cmd.Root().GenBashCompletion(os.Stdout)
+				return cmd.Root().GenBashCompletion(os.Stdout)
 			case "zsh":
-				cmd.Root().GenZshCompletion(os.Stdout)
+				return cmd.Root().GenZshCompletion(os.Stdout)
 			case "fish":
-				cmd.Root().GenFishCompletion(os.Stdout, true)
+				return cmd.Root().GenFishCompletion(os.Stdout, true)
 			case "powershell":
-				cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
+				return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
+			default:
+				return fmt.Errorf("unknown shell: %v", args[0])
 			}
 		},
 	}
@@ -53,17 +55,17 @@ dcmerge docker-compose.yml https://git.example.local/user/repo/docker-compose.ym
 func run(cmd *cobra.Command, args []string) error {
 	mergeExisting, err := cmd.Flags().GetBool("existing-win")
 	if err != nil {
-		return fmt.Errorf("Failed to parse flag last-win: %s", err)
+		return fmt.Errorf("failed to parse flag last-win: %s", err)
 	}
 
 	mergeLastWin, err := cmd.Flags().GetBool("last-win")
 	if err != nil {
-		return fmt.Errorf("Failed to parse flag last-win: %s", err)
+		return fmt.Errorf("failed to parse flag last-win: %s", err)
 	}
 
 	outputFile, err := cmd.Flags().GetString("output-file")
 	if err != nil {
-		return fmt.Errorf("Failed to parse flag output-file: %s", err)
+		return fmt.Errorf("failed to parse flag output-file: %s", err)
 	}
 
 	dockerComposeConfig := dockerCompose.NewConfig()
@@ -76,7 +78,7 @@ func run(cmd *cobra.Command, args []string) error {
 	for _, config := range dockerComposeConfigs {
 		switch {
 		case mergeExisting && mergeLastWin:
-			return fmt.Errorf("Neither --first-win or --last-win can be specified - not booth.")
+			return fmt.Errorf("neither --first-win or --last-win can be specified - not booth")
 		case mergeExisting && !mergeLastWin:
 			dockerComposeConfig.MergeExistingWin(config)
 		case !mergeExisting && mergeLastWin:
@@ -97,7 +99,7 @@ func run(cmd *cobra.Command, args []string) error {
 		if err != nil {
 			return err
 		}
-		defer f.Close()
+		defer func() { _ = f.Close() }()
 
 		yamlEncoder := yaml.NewEncoder(f)
 		yamlEncoder.SetIndent(2)

main.go

@@ -5,5 +5,5 @@ import "git.cryptic.systems/volker.raschek/dcmerge/cmd"
 var version string
 
 func main() {
-	cmd.Execute(version)
+	_ = cmd.Execute(version)
 }

manifest.tmpl

@@ -1,20 +0,0 @@
-image: git.cryptic.systems/volker.raschek/dcmerge:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
-{{#if build.tags}}
-tags:
-{{#each build.tags}}
-  - {{this}}
-{{/each}}
-  - "latest"
-{{/if}}
-manifests:
-  -
-    image: git.cryptic.systems/volker.raschek/dcmerge:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}-amd64
-    platform:
-      architecture: amd64
-      os: linux
-  -
-    image: git.cryptic.systems/volker.raschek/dcmerge:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}-arm64-v8
-    platform:
-      architecture: arm64
-      os: linux
-      variant: v8

pkg/domain/dockerCompose/config.go

@@ -531,6 +531,7 @@ func NewSecret() *Secret {
 }
 
 type Service struct {
+	Command            []string                   `json:"command,omitempty" yaml:"command,omitempty"`
 	CapabilitiesAdd    []string                   `json:"cap_add,omitempty" yaml:"cap_add,omitempty"`
 	CapabilitiesDrop   []string                   `json:"cap_drop,omitempty" yaml:"cap_drop,omitempty"`
 	DependsOnContainer *DependsOnContainer        `json:"depends_on,omitempty" yaml:"depends_on,omitempty"`
@@ -641,7 +642,8 @@ func (s *Service) Equal(equalable Equalable) bool {
 	case s == nil && service != nil:
 		return false
 	default:
-		return equalSlice(s.CapabilitiesAdd, service.CapabilitiesAdd) &&
+		return equalSlice(s.Command, service.Command) &&
+			equalSlice(s.CapabilitiesAdd, service.CapabilitiesAdd) &&
 			equalSlice(s.CapabilitiesDrop, service.CapabilitiesDrop) &&
 			s.DependsOnContainer.Equal(service.DependsOnContainer) &&
 			s.Deploy.Equal(service.Deploy) &&
@@ -673,6 +675,7 @@ func (s *Service) MergeExistingWin(service *Service) {
 	// 	fallthrough
 
 	default:
+		s.mergeExistingWinCommand(service.Command)
 		s.mergeExistingWinCapabilitiesAdd(service.CapabilitiesAdd)
 		s.mergeExistingWinCapabilitiesDrop(service.CapabilitiesDrop)
 		s.mergeExistingWinDependsOnContainer(service.DependsOnContainer)
@@ -707,6 +710,7 @@ func (s *Service) MergeLastWin(service *Service) {
 	// 	fallthrough
 
 	default:
+		s.mergeLastWinCommand(service.Command)
 		s.mergeLastWinCapabilitiesAdd(service.CapabilitiesAdd)
 		s.mergeLastWinCapabilitiesDrop(service.CapabilitiesDrop)
 		s.mergeLastWinDependsOnContainer(service.DependsOnContainer)
@@ -723,6 +727,13 @@ func (s *Service) MergeLastWin(service *Service) {
 	}
 }
 
+func (s *Service) mergeExistingWinCommand(command []string) {
+	if len(s.Command) > 0 {
+		return
+	}
+	s.Command = command
+}
+
 func (s *Service) mergeExistingWinCapabilitiesAdd(capabilitiesAdd []string) {
 	for _, capabilityAdd := range capabilitiesAdd {
 		if !existsInSlice(s.CapabilitiesAdd, capabilityAdd) && len(capabilityAdd) > 0 {
@@ -935,6 +946,12 @@ func (s *Service) mergeExistingWinVolumes(volumes []string) {
 	}
 }
 
+func (s *Service) mergeLastWinCommand(command []string) {
+	if len(command) > 0 {
+		s.Command = command
+	}
+}
+
 func (s *Service) mergeLastWinCapabilitiesAdd(capabilitiesAdd []string) {
 	for _, capabilityAdd := range capabilitiesAdd {
 		if len(capabilityAdd) <= 0 {
@@ -1288,8 +1305,8 @@ func (sdoc *DependsOnContainer) Equal(equalable Equalable) bool {
 
 // MarshalYAML implements the MarshalYAML interface to customize the behavior when being marshaled into a YAML document.
 func (sdoc *DependsOnContainer) MarshalYAML() (interface{}, error) {
-	var foundAnotherCondition bool = false
-	var dependencyNames []string
+	var foundAnotherCondition = false
+	var dependencyNames = make([]string, 0)
 
 	for dependencyName, dependencyDefinition := range sdoc.DependsOn {
 		if dependencyDefinition.Condition == ServiceDependsOnConditionServiceStarted {

pkg/domain/dockerCompose/config_test.go

@@ -301,6 +301,7 @@ func TestService_Equal(t *testing.T) {
 		},
 		{
 			equalableA: &dockerCompose.Service{
+				Command:            []string{},
 				CapabilitiesAdd:    []string{},
 				CapabilitiesDrop:   []string{},
 				DependsOnContainer: &dockerCompose.DependsOnContainer{},
@@ -316,6 +317,7 @@ func TestService_Equal(t *testing.T) {
 				Volumes:            []string{},
 			},
 			equalableB: &dockerCompose.Service{
+				Command:            []string{},
 				CapabilitiesAdd:    []string{},
 				CapabilitiesDrop:   []string{},
 				DependsOnContainer: &dockerCompose.DependsOnContainer{},
@@ -332,6 +334,15 @@ func TestService_Equal(t *testing.T) {
 			},
 			expectedResult: true,
 		},
+		{
+			equalableA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			equalableB: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			expectedResult: true,
+		},
 		{
 			equalableA: &dockerCompose.Service{
 				CapabilitiesAdd: []string{"NET_ADMIN"},
@@ -636,6 +647,52 @@ func TestService_MergeExistingWin(t *testing.T) {
 			expectedService:    &dockerCompose.Service{},
 		},
 
+		// Command
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{""},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+
 		// CapabilitiesAdd
 		{
 			serviceDeploymentA: &dockerCompose.Service{
@@ -1620,6 +1677,52 @@ func TestService_MergeLastWin(t *testing.T) {
 			expectedService:    &dockerCompose.Service{},
 		},
 
+		// Command
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+		},
+		{
+			serviceDeploymentA: &dockerCompose.Service{
+				Command: []string{"/usr/bin/cp", "--recursive", "/tmp/foo.txt", "/tmp/bar.txt"},
+			},
+			serviceDeploymentB: &dockerCompose.Service{
+				Command: []string{""},
+			},
+			expectedService: &dockerCompose.Service{
+				Command: []string{""},
+			},
+		},
+
 		// CapabilitiesAdd
 		{
 			serviceDeploymentA: &dockerCompose.Service{

pkg/domain/dockerCompose/equalable.go

@@ -55,8 +55,8 @@ func EqualStringMap[R Equalable](mapA, mapB map[string]R) bool {
 
 // ExistsInMap returns true if object of type any exists under the passed name.
 func ExistsInMap[T any](m map[string]T, name string) bool {
-	switch {
-	case m == nil:
+	switch m {
+	case nil:
 		return false
 	default:
 		_, present := m[name]

pkg/domain/dockerCompose/test/assets/merge/testcase003/docker-compose-000.yml

@@ -0,0 +1,4 @@
+services:
+  frontend:
+    command: [ "/usr/bin/cp", "--recursive", "--force", "/tmp/foo.txt", "/tmp/bar.txt" ]
+    image: library/frontend:latest

pkg/domain/dockerCompose/test/assets/merge/testcase003/docker-compose-001.yml

@@ -0,0 +1,4 @@
+services:
+  frontend:
+    command: [ "/usr/bin/cp", "--recursive", "--force", "/tmp/bar.txt", "/tmp/foo.txt"]
+    image: library/frontend:latest

pkg/domain/dockerCompose/test/assets/merge/testcase003/expectedResult.yml

@@ -0,0 +1,9 @@
+services:
+  frontend:
+    command:
+      - /usr/bin/cp
+      - --recursive
+      - --force
+      - /tmp/foo.txt
+      - /tmp/bar.txt
+    image: library/frontend:latest

pkg/fetcher/fetcher.go

@@ -20,15 +20,15 @@ func Fetch(urls ...string) ([]*dockerCompose.Config, error) {
 			return nil, err
 		}
 
-		switch {
-		case dockerComposeURL.Scheme == "http" || dockerComposeURL.Scheme == "https":
+		switch dockerComposeURL.Scheme {
+		case "http", "https":
 			dockerComposeConfig, err := getDockerComposeViaHTTP(dockerComposeURL.String())
 			if err != nil {
 				return nil, err
 			}
 
 			dockerComposeConfigs = append(dockerComposeConfigs, dockerComposeConfig)
-		case dockerComposeURL.Scheme == "file":
+		case "file":
 			fallthrough
 		default:
 			dockerComposeConfig, err := readDockerComposeFromFile(dockerComposeURL.Path)
@@ -43,7 +43,7 @@ func Fetch(urls ...string) ([]*dockerCompose.Config, error) {
 	return dockerComposeConfigs, nil
 }
 
-var ErrorPathIsDir error = errors.New("Path is a directory")
+var ErrorPathIsDir error = errors.New("path is a directory")
 
 func getDockerComposeViaHTTP(url string) (*dockerCompose.Config, error) {
 	req, err := http.NewRequest(http.MethodGet, url, nil)
@@ -55,10 +55,10 @@ func getDockerComposeViaHTTP(url string) (*dockerCompose.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("Received unexpected HTTP-Statuscode %v", resp.StatusCode)
+		return nil, fmt.Errorf("received unexpected HTTP-Statuscode %v", resp.StatusCode)
 	}
 
 	dockerCompose := dockerCompose.NewConfig()
@@ -85,7 +85,7 @@ func readDockerComposeFromFile(name string) (*dockerCompose.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer file.Close()
+	defer func() { _ = file.Close() }()
 
 	dockerCompose := dockerCompose.NewConfig()
 

renovate.json

@@ -1,41 +1,10 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "assignees": [ "volker.raschek" ],
-  "labels": [ "renovate" ],
-  "packageRules": [
-    {
-      "addLabels": [ "renovate/droneci", "renovate/automerge" ],
-      "automerge": true,
-      "matchManagers": "droneci",
-      "matchUpdateTypes": [ "minor", "patch"]
-    },
-    {
-      "description": "Automatically update patch version of used container images in docker files",
-      "addLabels": [ "renovate/container-image", "renovate/automerge" ],
-      "automerge": true,
-      "matchBaseBranches": [ "master" ],
-      "matchManagers": [ "dockerfile" ],
-      "matchUpdateTypes": [ "minor", "patch" ]
-    },
-    {
-      "description": "Automatically update minor and patch versions of go modules",
-      "addLabels": [ "renovate/gomod", "renovate/automerge" ],
-      "automerge": true,
-      "matchManagers": [ "gomod" ],
-      "matchUpdateTypes": [ "minor", "patch" ]
-    },
-    {
-      "description": "Disable major update version of go modules",
-      "enabled": false,
-      "matchManagers": [ "gomod" ],
-      "matchPackageNames": [
-        "gopkg.in/yaml.v2"
-      ]
-    }
-  ],
-  "postUpdateOptions": [
-    "gomodTidy"
-  ],
-  "rebaseLabel": "renovate/rebase",
-  "rebaseWhen": "behind-base-branch"
+  "extends": [
+    "local>volker.raschek/renovate-config:default#master",
+    "local>volker.raschek/renovate-config:container#master",
+    "local>volker.raschek/renovate-config:actions#master",
+    "local>volker.raschek/renovate-config:golang#master",
+    "local>volker.raschek/renovate-config:regexp#master"
+  ]
 }