updated image workflow

Author: hansidm

.github/workflows/docker-image.yml

@@ -1,27 +1,58 @@
-name: Docker Image CI
+name: Build and Publish Docker Image
 
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
+    tags: ["v*"]
+  workflow_dispatch:
+
+env:
+  REGISTRY_IMAGE: tetherlessworld/poem-demo
 
 jobs:
-  build:
+  docker:
+    name: Build & Push
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Check out
         uses: actions/checkout@v5
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY_IMAGE }}
+          tags: |
+            type=ref,event=tag
+            type=semver,pattern={{version}},enable={{is_semver}}
+            type=semver,pattern={{major}}.{{minor}},enable={{is_semver}}
+            type=semver,pattern={{major}},enable={{is_semver}}
+            type=ref,event=branch,enable={{is_default_branch}}
+            type=sha
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=latest,enable={{is_tag}}
+
       - name: Build and push
         uses: docker/build-push-action@v6
         with:
           context: .
           file: ./docker/Dockerfile-demo
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: tetherlessworld/poem-demo:latest
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}