feat(.github): add deploy-app-image workflow

.github/workflows/deploy-app-image.yaml

@@ -0,0 +1,74 @@
+#
+name: Create and publish a Docker app image
+
+# Configures this workflow to run every time a change is pushed to the branch called `release`.
+on:
+  workflow_call:
+  workflow_dispatch:
+  push:
+    branches: ["release"]
+    tags: ["v*"]
+
+# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
+env:
+  REGISTRY: ghcr.io
+
+# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      #
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Environment Variables from Dotenv
+        uses: c-py/action-dotenv-to-setenv@v4
+        with:
+          # use branch name as suffix for dotfile
+          env-file: ./.docker/docker.app.env
+
+        # Uses the `docker/login-action` action to log in to the Container registry registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            # dynamically set the branch name as a prefix
+            # type=sha,prefix={{branch}}-
+            type=semver,pattern={{version}}
+            # set latest tag for release branch
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'release') }}
+
+      # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
+      # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
+      # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          file: ./.docker/Dockerfile.app
+          build-args: |
+            ARG_BUILD_FROM=${{ env.BUILD_FROM }}
+            ARG_USERNAME=${{ env.USERNAME }}
+            ARG_USER_UID=${{ env.USER_UID }}
+            ARG_USER_GID=${{ env.USER_GID }}
+            ARG_WORKSPACE_ROOT=${{ env.CONTAINER_WORKSPACE_ROOT }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}