Fix Docker build context in CI (#13)

* refactor(ci): docker workflow

Author: sundowndev

.github/workflows/docker.yml

@@ -16,4 +16,5 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
           context: .
-          workdir: support/docker
+          dockerfile: support/docker/Dockerfile
+          tags: "latest"