From 859921fef471edb98975d63b7c775c61fefd78f6 Mon Sep 17 00:00:00 2001
From: Petr Šplíchal <psplicha@redhat.com>
Date: Jan 23 2019 10:33:00 +0000
Subject: Add docker group instead of replacing current


---

diff --git a/devconf-19/README.md b/devconf-19/README.md
index b6d3137..40eec67 100644
--- a/devconf-19/README.md
+++ b/devconf-19/README.md
@@ -6,7 +6,7 @@ Install docker on your machine (as root), as USER use your localhost user you wa
 ```sh 
 sudo dnf -y install docker
 sudo groupadd docker
-sudo usermod -G docker USER
+sudo usermod -aG docker USER
 ```
 
 If you need to reload your groups, use the following command