feat(gitlab): add CI component

This adds a GitLab CI/CD component that can be `included` in users
GitLab CI configuration to integrate releaser-pleaser.

Unlike the GitHub Action, this can not easily run whenever a merge
request description is changed, only when changes are pushed to main.

We also switch the container base image from `static` to `busybox`
as GitLab CI requires a shell (`sh`) binary to be present for the image
use to run jobs.

.github/workflows/mirror.yaml

@@ -1,28 +0,0 @@
-name: mirror
-on:
-  push:
-    branches: [main]
-    tags: ["*"]
-
-jobs:
-  gitlab-com:
-    runs-on: ubuntu-latest
-    env:
-      REMOTE: mirror
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          # Need all to fetch all tags so we can push them
-          fetch-depth: 0
-
-      - name: Add Remote
-        env:
-          CLONE_URL: "https://releaser-pleaser:${{ secrets.GITLAB_COM_PUSH_TOKEN }}@gitlab.com/apricote/releaser-pleaser.git"
-        run: git remote add $REMOTE $CLONE_URL
-
-      - name: Push Branches
-        run: git push --force --all --verbose $REMOTE
-
-      - name: Push Tags
-        run: git push --force --tags --verbose $REMOTE

.gitlab-ci.yml

@@ -1,15 +0,0 @@
-stages: [release]
-
-# For the GitLab CI/CD component to be usable, it needs to be published in
-# the CI/CD catalog. This happens on new releases.
-# As the primary tagging happens on GitHub, we only react to pushed tags
-# and create a corresponding GitLab Release.
-create-release:
-  stage: release
-  image: registry.gitlab.com/gitlab-org/release-cli:latest
-  script: echo "Creating release $CI_COMMIT_TAG"
-  rules:
-    - if: $CI_COMMIT_TAG
-  release:
-    tag_name: "$CI_COMMIT_TAG"
-    description: "$CI_COMMIT_TAG_MESSAGE"

CHANGELOG.md

@@ -1,17 +1,5 @@
 # Changelog
 
-## [v0.4.0-beta.0](https://github.com/apricote/releaser-pleaser/releases/tag/v0.4.0-beta.0)
-
-### Features
-
-- add support for GitLab repositories (#49)
-
-### Bug Fixes
-
-- **parser**: continue on unparsable commit message (#48)
-- **cli**: command name in help output (#52)
-- **parser**: invalid handling of empty lines (#53)
-
 ## [v0.3.0](https://github.com/apricote/releaser-pleaser/releases/tag/v0.3.0)
 
 ### :sparkles: Highlights

action.yml

@@ -21,7 +21,7 @@ inputs:
 outputs: {}
 runs:
   using: 'docker'
-  image: ghcr.io/apricote/releaser-pleaser:v0.4.0-beta.0 # x-releaser-pleaser-version
+  image: ghcr.io/apricote/releaser-pleaser:v0.3.0 # x-releaser-pleaser-version
   args:
     - run
     - --forge=github

templates/run.yml

@@ -18,13 +18,15 @@ spec:
     # Remember to update docs/reference/gitlab-ci-component.md
 ---
 
-releaser-pleaser:
+workflow:
-  stage: $[[ inputs.stage ]]
   rules:
     # There is no way to run a pipeline when the MR description is updated :(
     - if: $CI_COMMIT_BRANCH == "$[[ inputs.branch ]]"
+
+releaser-pleaser:
+  stage: $[[ inputs.stage ]]
   image:
-    name: ghcr.io/apricote/releaser-pleaser:v0.4.0-beta.0 # x-releaser-pleaser-version
+    name: ghcr.io/apricote/releaser-pleaser:v0.3.0 # x-releaser-pleaser-version
     entrypoint: [""]
   variables:
     GITLAB_TOKEN: $[[ inputs.token ]]