Run a docker command on a host.

docker_cmd(host, cmd = NULL, args = NULL, docker_opts = NULL,
  capture_text = FALSE, ...)

Arguments

host	A host object.
cmd	A docker command, such as "run" or "ps"
args	Arguments to pass to the docker command
docker_opts	Options to docker. These are things that come before the docker command, when run on the command line.
capture_text	If `FALSE` (the default), return the host object. This is useful for chaining functions. If `TRUE`, capture the text output from both stdout and stderr, and return that. Note that `TRUE` may not be available on all types of hosts.
...	Other arguments passed to the SSH command for the host

if (FALSE) {
docker_cmd(localhost, "ps", "-a")
}