fix pull context CI/CD.

.github/workflows/build.yml

@@ -96,6 +96,10 @@ jobs:
         name: Build and push
         uses: docker/build-push-action@v2
         with:
+          # Turns out the build-push-action runs in a "GitHub" context by default.
+          # At the very least, it means pulling down your repository as part of pre-Dockerfile command.
+          # You can change it to the "file" context by using:
+          context: .
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           platforms: linux/amd64,linux/arm64,linux/arm/v7