diff --git a/python/ray/scripts/scripts.py b/python/ray/scripts/scripts.py
index 352c41426..b4d853cb2 100644
--- a/python/ray/scripts/scripts.py
+++ b/python/ray/scripts/scripts.py
@@ -610,6 +610,11 @@ def rsync_up(cluster_config_file, source, target, cluster_name):
 
 @cli.command()
 @click.argument("cluster_config_file", required=True, type=str)
+@click.option(
+    "--docker",
+    is_flag=True,
+    default=False,
+    help="Runs command in the docker container specified in cluster_config.")
 @click.option(
     "--stop",
     is_flag=True,
@@ -637,8 +642,8 @@ def rsync_up(cluster_config_file, source, target, cluster_name):
     "--port-forward", required=False, type=int, help="Port to forward.")
 @click.argument("script", required=True, type=str)
 @click.argument("script_args", required=False, type=str, nargs=-1)
-def submit(cluster_config_file, screen, tmux, stop, start, cluster_name,
-           port_forward, script, script_args):
+def submit(cluster_config_file, docker, screen, tmux, stop, start,
+           cluster_name, port_forward, script, script_args):
     """Uploads and runs a script on the specified cluster.
 
     The script is automatically synced to the following location:
@@ -655,7 +660,7 @@ def submit(cluster_config_file, screen, tmux, stop, start, cluster_name,
     rsync(cluster_config_file, script, target, cluster_name, down=False)
 
     cmd = " ".join(["python", target] + list(script_args))
-    exec_cluster(cluster_config_file, cmd, screen, tmux, stop, False,
+    exec_cluster(cluster_config_file, cmd, docker, screen, tmux, stop, False,
                  cluster_name, port_forward)