.py-build:
    stage: build
    image: docker:19.03.13
    variables:
        # docker host
        DOCKER_HOST: tcp://docker:2376
        # container, thanks to volume mount from config.toml
        DOCKER_TLS_CERTDIR: "/certs"
        # These are usually specified by the entrypoint, however the
        # Kubernetes executor doesn't run entrypoints
        # https://gitlab.com/gitlab-org/gitlab-runner/-/issues/4125
        DOCKER_TLS_VERIFY: 1
        DOCKER_CERT_PATH: "$DOCKER_TLS_CERTDIR/client"
        DOCKERFILE_PATH: docker/
    services:
    - docker:19.03.13-dind
    before_script:
    - docker info
    - cd $CONTEXT
    script:
    - docker build -t $CI_PROJECT_PATH_SLUG:$CI_COMMIT_SHORT_SHA -f $DOCKERFILE_PATH .