feat: support all SemVer 2.0 pre-release identifiers

Replace the RC-only pattern with a generic SemVer 2.0 pre-release
pattern so that tags like -alpha, -beta, -dev or -rc are all correctly
detected as pre-releases. Previously only -rc tags were recognized.

Also configure git user identity before tagging in the auto-release
workflow.

Co-authored-by: Copilot <copilot@github.com>

.gitea/workflows/auto-release.yaml

@@ -64,5 +64,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           new_tag=${{ steps.bump.outputs.new_tag }}
+          git config --local user.name "${GIT_USER}"
+          git config --local user.email "${GIT_EMAIL}"
           git tag -a "${new_tag}" -m "${new_tag}"
           git push origin "${new_tag}"

README.md

@@ -5,14 +5,14 @@ annotations](https://artifacthub.io/docs/topics/annotations/helm/#supported-anno
 them to `Chart.yaml`.
 
 The action parses conventional commit messages between two Git tags and produces an `artifacthub.io/changes` annotation.
-Pre-release tags (matching `-rc`) are detected automatically and result in an `artifacthub.io/prerelease` annotation
+Pre-release tags according to [SemVer 2.0](https://semver.org/) (e.g. `-alpha`, `-beta.1`, `-rc.2`) are detected
-instead.
+automatically and result in an `artifacthub.io/prerelease` annotation instead.
 
 ## Usage
 
 ### Auto-detect tags
 
-Without explicit inputs the action determines the two most recent non-RC tags from the Git history:
+Without explicit inputs the action determines the two most recent stable (non-pre-release) tags from the Git history:
 
 ```yaml
 steps:
@@ -58,8 +58,8 @@ steps:
 
 ## Pre-releases
 
-Tags matching the pattern `-rc` (e.g. `v1.0.0-rc.1`, `v2.0.0-rc`) are treated as pre-releases.
+Tags containing a hyphen-separated pre-release identifier according to [SemVer 2.0](https://semver.org/) are treated as
-When `new-tag` is a pre-release tag, the action:
+pre-releases (e.g. `v1.0.0-alpha`, `v1.0.0-beta.1`, `v2.0.0-rc.2`). When `new-tag` is a pre-release tag, the action:
 
 1. Sets `artifacthub.io/prerelease: "true"` in `Chart.yaml`.
 2. Skips changelog generation entirely.

add-annotations.sh

@@ -7,7 +7,7 @@
 set -euo pipefail
 
 readonly CHART_FILE="${CHART_FILE:="Chart.yaml"}"
-readonly RC_PATTERN="\-rc([-\.][0-9]+)?$"
+readonly PRERELEASE_PATTERN="\-[a-zA-Z0-9]+([-\.][a-zA-Z0-9]+)*$"
 
 CHANGE_LOG_YAML=""
 
@@ -24,8 +24,8 @@ if [[ ! -f "${CHART_FILE}" ]]; then
 fi
 
 # Determine old and new tags
-DEFAULT_NEW_TAG="$(git tag --sort=-version:refname | grep --invert-match --perl-regexp "${RC_PATTERN}" | head --lines 1)"
+DEFAULT_NEW_TAG="$(git tag --sort=-version:refname | grep --invert-match --perl-regexp "${PRERELEASE_PATTERN}" | head --lines 1)"
-DEFAULT_OLD_TAG="$(git tag --sort=-version:refname | grep --invert-match --perl-regexp "${RC_PATTERN}" | head --lines 2 | tail --lines 1)"
+DEFAULT_OLD_TAG="$(git tag --sort=-version:refname | grep --invert-match --perl-regexp "${PRERELEASE_PATTERN}" | head --lines 2 | tail --lines 1)"
 
 if [[ -n "${INPUT_OLD_TAG:-}" ]]; then
   OLD_TAG="${INPUT_OLD_TAG}"
@@ -49,7 +49,7 @@ if [[ -z "$(git tag --list "${NEW_TAG}")" ]]; then
   exit 1
 fi
 
-if [[ "${NEW_TAG}" =~ ${RC_PATTERN} ]]; then
+if [[ "${NEW_TAG}" =~ ${PRERELEASE_PATTERN} ]]; then
   echo "INFO: Tag '${NEW_TAG}' is a prerelease, setting prerelease annotation and skipping changelog."
   yq --no-colors --inplace ".annotations.\"artifacthub.io/prerelease\" = \"true\" | sort_keys(.)" "${CHART_FILE}"
   exit 0