Merge pull request jrnd-io#138 from ugol/docker-push-ghcr

ADD: publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,42 @@
+name: Create and publish a Docker images
+
+# trigger on creation of a new tag
+on:
+  push:
+    tags:
+      - "v*"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: "jr"
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push docker image to ghcr.io
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ghcr.io/${{ github.repository_owner }}/jr:${{ github.ref_name }}