try 4

.github/workflows/docker-publish.yml

@@ -18,34 +18,37 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
 
+      - name: prepare tag 
+        run: |
+            export IMAGE_ID=jambonz/$IMAGE_NAME
+
+            # Strip git ref prefix from version
+            export VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+            # Strip "v" prefix from tag name
+            [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+
+            # Use Docker `latest` tag convention
+            [ "$VERSION" == "main" ] && export VERSION=latest
+
+            echo IMAGE_ID=$IMAGE_ID
+            echo VERSION=$VERSION
+
       - name: Login to Docker Hub 
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-      - name: prepare tag 
-        run: |
-            IMAGE_ID=jambonz/$IMAGE_NAME
-
-            # Strip git ref prefix from version
-            VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
-
-            # Strip "v" prefix from tag name
-            [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
-
-            # Use Docker `latest` tag convention
-            [ "$VERSION" == "main" ] && VERSION=latest
-
-            echo IMAGE_ID=$IMAGE_ID
-            echo VERSION=$VERSION
-
       - name: Build and push Docker image
         uses: docker/build-push-action@v4
         with:
           context: .
           push: true
-          tags: jambonz/$IMAGE_NAME:$VERSION
+          tags: ${{ env.IMAGE_ID }}:${{ env.VERSION }}
           build-args: |
             GITHUB_REPOSITORY=$GITHUB_REPOSITORY
             GITHUB_REF=$GITHUB_REF
+        env:
+          IMAGE_ID: ${{ env.IMAGE_ID }}
+          VERSION: ${{ env.VERSION }}