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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?
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Docker experimental features can be enabled by adding an /etc/docker/daemon. json with {"experimental": true} on the Remote Docker instance and restarting the daemon. Be sure to set a Docker version that supports the functionality you are looking to make use of. If enabled, the command will print a value of true .
Docker CLI management commands start with docker , then a space, then the management category, then a space, and then the command. For example, docker container stop stops a container. A command referring to a specific container or image requires the name or id of that container or image.
The Docker client provides a command line interface (CLI) that allows you to issue build, run, and stop application commands to a Docker daemon. The main purpose of the Docker Client is to provide a means to direct the pull of images from a registry and to have it run on a Docker host.
There are a couple of ways to solve this problem:
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.
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 loginfor the first time. This is the best option, if you wish to permanently enable experimental mode.
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