document DOCKER_HIDE_LEGACY_COMMANDS env-var
The `DOCKER_HIDE_LEGACY_COMMANDS` environment
variable was added in
but not documented.
This adds the variable to the documentation.
@@ -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
