fast context switching

[andrewhsu]

This issue is to track a new feature to store credentials to connect to different clusters and quickly switch from one to the other. Inspired by kubectl context. This will allow a user to quickly switch between different DOCKER_HOST and kubernetes endpoints as well as other endpoints in the future.

Will bring a new subcommand that will look like:

$ docker context --help

Usage: docker context COMMAND

Manage contexts

Management Commands:
 set Modify an existing context

Commands:
 create Create a context
 export Export a context
 import Import a context
 ls List contexts
 rm Remove one or more contexts
 use Set the current docker context

Run 'docker context COMMAND --help' for more information on a command.

Older PR to moby for reference: moby/moby#38148

• foundation changes to docker/cli [do not merge] Fast context switch: foundation #1500
• docker cli ui changes Fast context switch: commands #1501
• tests TBD
• documentation TBD
• completion Bash completion for docker context command family #1619

[simonferquel]

First checkbox can now be checked. #1500 is validated and closed in favor of #1501

[simonferquel]

#1501 now brings tests to the high level commands

[simonferquel]

#1501 now brings commands documentation

[albers]

@simonferquel I'll add the completion after the feature is merged.

[simonferquel]

Ok thanks @albers

[simonferquel]

#1501 is merged. @albers you can start working on completion script. Do not hesitate to ping me on this.

[albers]

@simonferquel bash completion is done, see #1619

[theycallmemac]

@andrewhsu is this just awaiting documentation?

[theycallmemac]

@andrewhsu if this is just awaiting docs I can help

[thaJeztah]

Looks like this is done