fix: add condition to login step

Author: shenxianpeng

.github/workflows/CI.yml

@@ -49,17 +49,18 @@ jobs:
       - name: Check formatting
         run: make install-deps && make lint
 
-      - name: Login container registries
-        run: |
-          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
-          echo '${{ secrets.DOCKER_PASSWORD }}' | docker login -u '${{ secrets.DOCKER_USERNAME }}' --password-stdin
-
       - name: Check buildx bake
         run: docker buildx bake --file docker-bake.hcl --print
 
       - name: Build image for tag ${{ matrix.target }}
         run: docker buildx bake --file docker-bake.hcl ${{ matrix.target }}
 
+      - name: Login container registries
+        if: github.ref == 'refs/heads/master' && github.event_name == 'workflow_dispatch'
+        run: |
+          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+          echo '${{ secrets.DOCKER_PASSWORD }}' | docker login -u '${{ secrets.DOCKER_USERNAME }}' --password-stdin
+
       - name: Publish image for tag ${{ matrix.target }}
         if: github.ref == 'refs/heads/master' && github.event_name == 'workflow_dispatch'
         run: docker buildx bake --file docker-bake.hcl ${{ matrix.target }} --push