Clarify effect of docker start on started container in CLI docs
This behavior changed from v0.9 to v0.10, so document it to prevent
any confusion.
Docker-DCO-1.1-Signed-off-by: Matthew Heon (github: mheon)
@@ -1139,6 +1139,9 @@ more details on finding shared images from the commandline.
-a, --attach=false Attach container's stdout/stderr and forward all signals to the process
-i, --interactive=false Attach container's stdin
+When run on a container that has already been started,
+takes no action and succeeds unconditionally.
+
## stop
Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]
