CI: Add automated monthly releases

See be63f0bd82

.gitlab-ci.yml

@@ -7,6 +7,7 @@ image: registry.git.saibotk.de/saibotk.de/infrastructure-ci-container:latest
 stages:
   - lint
   - test
+  - release
 
 ansible-lint:
   stage: lint
@@ -15,3 +16,18 @@ ansible-lint:
   artifacts:
     reports:
       codequality: ansible-lint-report.json
+
+# Automated month-based releases
+release-branch:
+  stage: release
+  image: registry.gitlab.com/gitlab-org/release-cli
+  variables:
+    GIT_STRATEGY: clone
+    GIT_DEPTH: 0
+  script:
+    - apk add --no-cache git
+    - export INFRA_RELEASE_VERSION="$(date +%y.%m)"
+    - export INFRA_RELEASE_NAME="Infrastructure $INFRA_RELEASE_VERSION"
+    - export INFRA_RELEASE_DESCRIPTION="$(printf '## Changelog\n\n' && git log --no-merges --pretty="- %s (%h)" "HEAD...$(git tag | sort -V -r | head -1)" && printf '\n\n## External Contributors\n\n' && git log --pretty="- %an%n- %cn" HEAD...$(git tag | sort -V -r | head -1) | sort | uniq | grep -v 'Sheogorath' && printf "\n\n---\n*This is an automated release. See [#${CI_JOB_ID}]($CI_JOB_URL) for details.*")"
+  rules:
+    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $INFRA_RELEASE_NOW == "true" && $CI_COMMIT_TAG == null'