Fix latest tag

Author: felixschndr

.github/workflows/publish_image.yml

@@ -3,8 +3,8 @@ name: Deploy Images to GitHub Container Registry
 on: push
 
 env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: ghcr.io/${{ github.repository }}
+  PLATFORMS: linux/amd64,linux/arm64
 
 jobs:
   build-and-push-image:
@@ -21,7 +21,7 @@ jobs:
       - name: "Login to GitHub Container Registry"
         uses: docker/login-action@v3
         with:
-          registry: ${{ env.REGISTRY }}
+          registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.CONTAINER_REGISTRY_TOKEN }}
 
@@ -32,24 +32,25 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          images: ${{ env.IMAGE_NAME }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
           file: Dockerfile
           push: true
-          platforms: linux/amd64,linux/arm64
+          platforms: ${{ env.PLATFORMS }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
       - name: Build and push Docker image as latest
+        # if: github.ref == 'refs/heads/main'
         uses: docker/build-push-action@v5
         with:
           context: .
           file: Dockerfile
           push: true
-          platforms: linux/amd64,linux/arm64
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}:latest
+          platforms:  ${{ env.PLATFORMS }}
+          tags: ${{ steps.meta.outputs.tags }},${{ env.IMAGE_NAME }}:latest
+          labels: ${{ steps.meta.outputs.labels }}