switch to ghcr and remove old workflow

Author: alexzedim

.github/workflows/docker-build.yml

@@ -20,24 +20,29 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ vars.DOCKER_USERNAME }}/cmnw-next
+          images: ghcr.io/${{ github.repository }}
           tags: |
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
             type=ref,event=tag
+          labels: |
+            org.opencontainers.image.title=CMNW-NEXT
+            org.opencontainers.image.vendor=AlexZeDim
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
 
       - 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
+      - name: Log in to GitHub Container Registry
         uses: docker/login-action@v3
         with:
-          username: ${{ vars.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
         uses: docker/build-push-action@v6