fix: add docker file as context

.gitea/workflows/docker.yaml

@@ -14,8 +14,7 @@ jobs:
           export DOCKER_TLS_VERIFY=1
           export DOCKER_CERT_PATH="/certs/client"
           docker context create builders
-      # https://github.com/docker/setup-buildx-action
-      # https://docs.docker.com/engine/reference/commandline/cli/#environment-variables
+
       - name: Setup Docker Buildx
         id: buildx
         uses: docker/setup-buildx-action@v3
@@ -27,11 +26,13 @@ jobs:
           DOCKER_TLS_CERTDIR: "/certs"
           DOCKER_TLS_VERIFY: 1
           DOCKER_CERT_PATH: "/certs/client"
+
       - name: Build and push the image
         uses: docker/build-push-action@v5
         with:
+          context: .
+          file: ./Dockerfile
           platforms: linux/amd64
-          context: containers/test
         env:
           DOCKER_HOST: "tcp://docker:2376/"
           DOCKER_TLS_CERTDIR: "/certs"