usermod needs to be ran as root

2 weeks ago · 47fb92a475
1 changed files with 1 additions and 1 deletions
--- a/docs/operators/tutorial.md
+++ b/docs/operators/tutorial.md
@ -109,7 +109,7 @@ You need to keep port `:80` and `:443` free on your server for web proxying to y
 wget -O- https://get.docker.com | bash

 # add user to docker group
-usermod -aG docker $USER
+sudo usermod -aG docker $USER

 # setup swarm
 docker swarm init