From 7f7953dcc27206acc31bfdef56f7471017640b70 Mon Sep 17 00:00:00 2001
From: Hugo Marisco <0x6875676f@gmail.com>
Date: Tue, 27 Oct 2015 13:46:39 +0000
Subject: [PATCH] update gpg add key command, without sudo it fails

Signed-off-by: Hugo Marisco <0x6875676f@gmail.com>
---
 docs/installation/ubuntulinux.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/installation/ubuntulinux.md b/docs/installation/ubuntulinux.md
index 51a078764f..38003ec198 100644
--- a/docs/installation/ubuntulinux.md
+++ b/docs/installation/ubuntulinux.md
@@ -55,7 +55,7 @@ packages from the new repository:
 
 3. Add the new `gpg` key.
 
-        $ apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
+        $ sudo apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
 
 4. Open the `/etc/apt/sources.list.d/docker.list` file in your favorite editor.