How to enable experimental Docker CLI features

问题

I'm trying to use docker manifest inspect <image name>, but the Docker CLI says...

$ docker manifest inspect node
docker manifest inspect is only supported on a Docker cli with experimental cli features enabled

Considering the wealth of Docker documentation, this simple question is surprisingly difficult to search for.

How do I enable experimental CLI features?

回答1:

There are a couple of ways to solve this problem:

1. Specify the environment variable

   export DOCKER_CLI_EXPERIMENTAL=enabled

   This provides a temporary environment for testing the experimental features without having to commit to it's usage.

2. Docker config file

   Add "experimental": "enabled" to ~/.docker/config.json (default location) at the beginning of the file and not at the end (important detail)

   NOTE: The Docker config file only appears after you have run docker login for the first time. This is the best option, if you wish to permanently enable experimental mode.

来源：https://stackoverflow.com/questions/57937733/how-to-enable-experimental-docker-cli-features