include .env format: docker run --rm -ti -v ${PWD}:/tmp/python/app python:alpine sh -c "cd /tmp/python; pip install -q black; black ." clean: docker rm -f dragon-bot-test build-test: docker build -f ./Dockerfile-test-env -t dragon-bot-test . DRAGON_ENV := "test" test: format build-test docker run -ti -v ${PWD}/app:/app --rm --name dragon-bot-test --env-file=./.env dragon-bot-test bash