ci: push image to ghcr.io

.github/workflows/build.yaml

@@ -13,6 +13,9 @@ jobs:
           - dockerfile-suffix: ".unsafe"
             tag-suffix: "-unsafe"
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
       - uses: actions/checkout@v4
         with:
@@ -33,11 +36,22 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USER }}
           password: ${{ secrets.DOCKERHUB_PASS }}
 
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Build and push
         uses: docker/build-push-action@v5
         with:
           file: ./Dockerfile${{ matrix.dockerfile-suffix }}
           context: .
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: ngc7331/derper:latest${{ matrix.tag-suffix }}, ngc7331/derper:${{ env.VERSION }}${{ matrix.tag-suffix }}
+          tags: |
+            ngc7331/derper:latest${{ matrix.tag-suffix }}
+            ngc7331/derper:${{ env.VERSION }}${{ matrix.tag-suffix }}
+            ghcr.io/${{ github.repository_owner }}/${{ github.repository }}:latest${{ matrix.tag-suffix }}
+            ghcr.io/${{ github.repository_owner }}/${{ github.repository }}:${{ env.VERSION }}${{ matrix.tag-suffix }}