Add version check before pushing image

.github/workflows/build-and-push.yml

@@ -39,25 +39,38 @@ jobs:
           echo "version=$VERSION" >> $GITHUB_OUTPUT
           echo "Current version: $VERSION"
 
+      - name: Check if version tag exists on Docker Hub
+        id: check_version
+        run: |
+          if docker manifest inspect ${{ env.DOCKERHUB_REPO }}:${{ steps.version.outputs.version }} > /dev/null 2>&1; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+            echo "Version ${{ steps.version.outputs.version }} already exists, skipping push"
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+            echo "Version ${{ steps.version.outputs.version }} is new, will push"
+          fi
+
       - name: Set up Docker Buildx
+        if: steps.check_version.outputs.exists == 'false' || github.event_name == 'pull_request'
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to Docker Hub
-        if: github.event_name != 'pull_request'
+        if: github.event_name != 'pull_request' && steps.check_version.outputs.exists == 'false'
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Log in to GitHub Container Registry
-        if: github.event_name != 'pull_request'
+        if: github.event_name != 'pull_request' && steps.check_version.outputs.exists == 'false'
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata for Docker
+        if: steps.check_version.outputs.exists == 'false' || github.event_name == 'pull_request'
         id: meta
         uses: docker/metadata-action@v5
         with:
@@ -67,9 +80,9 @@ jobs:
           tags: |
             type=raw,value=latest,enable={{is_default_branch}}
             type=raw,value=${{ steps.version.outputs.version }}
-            type=sha,prefix=
 
       - name: Build and push
+        if: steps.check_version.outputs.exists == 'false' || github.event_name == 'pull_request'
         uses: docker/build-push-action@v5
         with:
           context: .

VERSION

@@ -1 +1 @@
-1.0.0
+1.0.1