chore(deps): update dependency docker/compose to v5

The following downloads the finished docker-compose v5 binary and delivers it as
a scratch container image.

.gitea/workflows/auto-release.yaml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "master" ]
     paths:
-    - Makefile
+    - Dockerfile
 
 env:
   GIT_EMAIL: noreply@cryptic.systems
@@ -26,8 +26,8 @@ jobs:
         run: |
           echo "changed=false" >> $GITHUB_OUTPUT
 
-          for file in Makefile; do
-            if git diff HEAD~1 HEAD -- "${file}" | grep --quiet '^[+-]DC_VERSION'; then
+          for file in Dockerfile; do
+            if git diff HEAD~1 HEAD -- "${file}" | grep --quiet '^[+-]ARG DC_VERSION'; then
               echo "DC_VERSION line changed."
               echo "changed=true" >> $GITHUB_OUTPUT
               break
@@ -42,7 +42,7 @@ jobs:
         id: create_tag
         if: steps.check_change.outputs.changed == 'true'
         run: |
-          defined_tag="$(grep --only-matching --perl-regexp 'DC_VERSION\?=v?[\d]*(\.[\d]*){0,2}' Makefile | cut --delimiter='=' --fields=2)"
+          defined_tag="$(grep --only-matching --perl-regexp 'ARG DC_VERSION=v?[\d]*(\.[\d]*){0,2}' Dockerfile | cut --delimiter='=' --fields=2)"
 
           echo "defined_tag=${defined_tag}" >> $GITHUB_OUTPUT
           echo "New tag: ${defined_tag}"

Dockerfile

@@ -1,10 +1,8 @@
 FROM docker.io/library/ubuntu:24.04 AS download
 
-ARG DC_VERSION
+ARG DC_VERSION=v5.0.0
 
 RUN NAME=docker-compose-$(uname | tr [:upper:] [:lower:])-$(uname -m); \
-    echo "${NAME}" && \
-    echo $(uname) && \
     apt update --yes && \
     apt install --yes curl && \
     curl \

Makefile

@@ -1,7 +1,3 @@
-# DC_VERSION
-# Only required to install a specify version
-DC_VERSION?=v5.0.0 # renovate: datasource=github-releases depName=docker/compose
-
 # CONTAINER_RUNTIME
 # The CONTAINER_RUNTIME variable will be used to specified the path to a container runtime. This is needed to start and
 # run a container image.
@@ -22,7 +18,6 @@ DC_IMAGE_FULLY_QUALIFIED=${DC_IMAGE_REGISTRY_NAME}/${DC_IMAGE_NAMESPACE}/${DC_IM
 PHONY:=container-image/build
 container-image/build:
 	${CONTAINER_RUNTIME} build \
-		--build-arg DC_VERSION=${DC_VERSION} \
 		--file Dockerfile \
 		--no-cache \
 		--pull \

README.md

@@ -11,7 +11,7 @@ The workflow or how `docker-compose` can in general be used is documented at
 image.
 
 ```bash
-IMAGE_VERSION=2.40.3
+IMAGE_VERSION=5.0.0
 docker run \
   --rm \
   --volume "$(pwd):$(pwd)" \

renovate.json

@@ -4,9 +4,11 @@
     {
       "customType": "regex",
       "fileMatch": [
+        "^Dockerfile$",
         "^README\\.md$"
       ],
       "matchStrings": [
+        "ARG DC_VERSION=(?<currentValue>.*)",
         "IMAGE_VERSION=(?<currentValue>.*)"
       ],
       "datasourceTemplate": "github-releases",