Fix: remove context field from docker workflow (#109)

Author: hazim-j

.github/workflows/docker.yml

@@ -21,7 +21,6 @@ jobs:
       - name: Build and push
         uses: docker/build-push-action@v4
         with:
-          context: .
           platforms: linux/amd64,linux/arm64
           push: true
           tags: stackupwallet/stackup-bundler:latest