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Confusing warning when selecting default context with DOCKER_HOST set #1932
Description
Description
If the DOCKER_HOST environment variable is set and the default context is selected, a confusing warning is printed about DOCKER_HOST overriding the active context.
Steps to reproduce the issue:
- Set
DOCKER_HOST=unix:///var/run/docker.sock(or any other endpoint). - Do
docker context use default.
Describe the results you received:
A warning message is printed.
$ docker context use default
default
Current context is now "default"
Warning: DOCKER_HOST environment variable overrides the active context. To use "default", either set the global --context flag, or unset DOCKER_HOST environment variable.
Describe the results you expected:
The default context, by design, uses the DOCKER_HOST based configuration. The warning message only makes sense when using non-default contexts. It should not be shown when using the default context.
Additional information you deem important (e.g. issue happens only occasionally):
N/A
Output of docker version:
Client: Docker Engine - Community
Version: 19.03.0-rc2
API version: 1.40
Go version: go1.12.5
Git commit: f97efcc
Built: Wed Jun 5 01:37:12 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.0-beta3
API version: 1.40 (minimum version 1.12)
Go version: go1.12.4
Git commit: c55e026
Built: Thu Apr 25 19:13:00 2019
OS/Arch: linux/amd64
Experimental: true
containerd:
Version: v1.2.6
GitCommit: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc:
Version: 1.0.0-rc7+dev
GitCommit: 029124da7af7360afa781a0234d1b083550f797c
docker-init:
Version: 0.18.0
GitCommit: fec3683
Output of docker info:
N/A
Additional environment details (AWS, VirtualBox, physical, etc.):
Reacted by Matt Stewart-Ronnisch
Activity
command: improve error handling on 'context list'/'context use'
command: improve error handling on 'context list'/'context use'
command: print appropriate warning messages on 'context list'/'contex…