document DOCKER_HIDE_LEGACY_COMMANDS env-var

The `DOCKER_HIDE_LEGACY_COMMANDS` environment
variable was added in a7c8bcac2ba60d6dd25a1157085d9245bed556ce
but not documented.

This adds the variable to the documentation.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2016-12-31 14:17:34 +01:00 committed by Tibor Vass
parent 7957741105
commit 8d4ea9f2cf
1 changed files with 3 additions and 0 deletions

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@ -69,6 +69,9 @@ by the `docker` command line:
Equates to `--disable-content-trust=false` for build, create, pull, push, run.
* `DOCKER_CONTENT_TRUST_SERVER` The URL of the Notary server to use. This defaults
to the same URL as the registry.
* `DOCKER_HIDE_LEGACY_COMMANDS` When set, Docker hides "legacy" top-level commands (such as `docker rm`, and
`docker pull`) in `docker help` output, and only `Management commands` per object-type (e.g., `docker container`) are
printed. This may become the default in a future release, at which point this environment-variable is removed.
* `DOCKER_TMPDIR` Location for temporary Docker files.
Because Docker is developed using Go, you can also use any environment