问题
I tried export DOCKER_BUILDKIT=1 before docker-compose build and I don't see the expected BuildKit output. Is it supposed to work?
回答1:
Support for BuildKit was just released in docker-compose 1.25.0. To enable:
export DOCKER_BUILDKIT=1 # or configure in daemon.json
export COMPOSE_DOCKER_CLI_BUILD=1
With those variables set in your shell, you can now run docker-compose build using BuildKit.
来源：https://stackoverflow.com/questions/58592259/how-do-you-enable-buildkit-with-docker-compose