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docs: document ssh multiplexing env 

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
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Tonis Tiigi 2020-01-09 10:19:01 -08:00
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docs/reference/commandline/cli.md
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@ -86,6 +86,8 @@ by the `docker` command line:
* `DOCKER_TMPDIR` Location for temporary Docker files. * `DOCKER_TMPDIR` Location for temporary Docker files.
* `DOCKER_CONTEXT` Specify the context to use (overrides DOCKER_HOST env var and default context set with "docker context use") * `DOCKER_CONTEXT` Specify the context to use (overrides DOCKER_HOST env var and default context set with "docker context use")
* `DOCKER_DEFAULT_PLATFORM` Specify the default platform for the commands that take the `--platform` flag. * `DOCKER_DEFAULT_PLATFORM` Specify the default platform for the commands that take the `--platform` flag.
* `DOCKER_SSH_NO_MUX` If set will turn off SSH multiplexing when connecting to daemon through SSH.
* `DOCKER_SSH_MUX_PERSIST` Set a duration for keeping SSH multiplexing socket alive between commands (e.g `60s`).
Because Docker is developed using Go, you can also use any environment Because Docker is developed using Go, you can also use any environment
variables used by the Go runtime. In particular, you may find these useful: variables used by the Go runtime. In particular, you may find these useful: