Merging upstream version 0.19.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

.github/workflows/publish-docker.yml

@@ -0,0 +1,79 @@
+name: Publish Docker
+run-name: "Publish Docker (gitlint_version=${{ inputs.gitlint_version }})"
+
+on:
+  workflow_call:
+    inputs:
+      gitlint_version:
+        description: "Gitlint version to build docker image for"
+        required: true
+        type: string
+      docker_image_tag:
+        description: "Docker image tag"
+        required: true
+        type: string
+      push_to_dockerhub:
+        description: "Push to dockerhub.com"
+        required: false
+        type: boolean
+        default: false
+  workflow_dispatch:
+    inputs:
+      gitlint_version:
+        description: "Gitlint version to build docker image for"
+        type: string
+      docker_image_tag:
+        description: "Docker image tag"
+        required: true
+        type: choice
+        options:
+          - "latest_dev"
+          - "latest"
+          - "Use $gitlint_version"
+        default: "Use $gitlint_version"
+      push_to_dockerhub:
+        description: "Push to dockerhub.com"
+        required: false
+        type: boolean
+        default: false
+
+jobs:
+  publish_docker:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Determine docker tag
+        id: set_tag
+        run: |
+          if [[ "${{ inputs.docker_image_tag }}" == "Use $gitlint_version" ]]; then
+            echo "docker_image_tag=${{ inputs.gitlint_version }}" >> $GITHUB_OUTPUT
+          else
+            echo "docker_image_tag=${{ inputs.docker_image_tag }}" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: jorisroovers
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build docker image
+        uses: docker/build-push-action@v4
+        with:
+          build-args: GITLINT_VERSION=${{ inputs.gitlint_version }}
+          tags: jorisroovers/gitlint:${{ steps.set_tag.outputs.docker_image_tag }}
+
+      - name: Test docker image
+        run: |
+          gitlint_version=$(docker run --ulimit nofile=1024 -v $(pwd):/repo jorisroovers/gitlint:${{ steps.set_tag.outputs.docker_image_tag }} --version)
+          [ "$gitlint_version" == "gitlint, version ${{ inputs.gitlint_version }}" ]
+
+
+      # This won't actually rebuild the docker image, but just push the previously built and cached image
+      - name: Push docker image
+        uses: docker/build-push-action@v4
+        with:
+          push: ${{ inputs.push_to_dockerhub }}
+          build-args: GITLINT_VERSION=${{ inputs.gitlint_version }}
+          tags: jorisroovers/gitlint:${{ steps.set_tag.outputs.docker_image_tag }}
+        if: inputs.push_to_dockerhub
+