Fix GitHub Actions workflow YAML compatibility

.github/workflows/container-image.yml

@@ -9,11 +9,11 @@ on:
       - main
     tags:
       - 'v*'
-  workflow_dispatch:
+  workflow_dispatch: {}
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: "${{ github.repository }}"
 
 jobs:
   build:
@@ -29,18 +29,18 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to GHCR
-        if: github.event_name != 'pull_request'
+        if: "${{ github.event_name != 'pull_request' }}"
         uses: docker/login-action@v3
         with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: "${{ env.REGISTRY }}"
+          username: "${{ github.actor }}"
+          password: "${{ secrets.GITHUB_TOKEN }}"
 
       - name: Extract image metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          images: "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
           tags: |
             type=ref,event=branch
             type=ref,event=tag
@@ -53,8 +53,8 @@ jobs:
           context: .
           file: ./Dockerfile
           platforms: linux/amd64
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          push: "${{ github.event_name != 'pull_request' }}"
+          tags: "${{ steps.meta.outputs.tags }}"
+          labels: "${{ steps.meta.outputs.labels }}"
           cache-from: type=gha
           cache-to: type=gha,mode=max