Add GitHub action to Publish Docker image on GHCR

Signed-off-by: tdruez <[email protected]>

.github/workflows/publish-docker.yml

@@ -0,0 +1,63 @@
+name: Publish Docker image on GHCR
+# https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions
+
+on:
+  workflow_dispatch:
+  push:
+    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
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-22.04
+
+    # 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@v4
+
+      # Uses the `docker/login-action` action to log in to the Container registry using
+      # the account and password that will publish the packages.
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # 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@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      # 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.
+      # 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@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ steps.meta.outputs.tags }}
+            ${{ env.REGISTRY }}/nexb/dejacode:latest
+          labels: ${{ steps.meta.outputs.labels }}