Better solution for strict key check

doc/install/installation.md

@@ -149,20 +149,11 @@ Fix the directory permissions for the repositories:
     sudo chown -R git:git /home/git/repositories/
-## Disable StrictHostKeyChecking for localhost and your domain
-    echo "Host localhost
-       StrictHostKeyChecking no
-       UserKnownHostsFile=/dev/null" | sudo tee -a /etc/ssh/ssh_config
-
-    echo "Host YOUR_DOMAIN_NAME
-       StrictHostKeyChecking no
-       UserKnownHostsFile=/dev/null" | sudo tee -a /etc/ssh/ssh_config
-
-    # If gitolite domain differs
-    echo "Host YOUR_GITOLITE_DOMAIN
-       StrictHostKeyChecking no
-       UserKnownHostsFile=/dev/null" | sudo tee -a /etc/ssh/ssh_config
+## Add domains to list to the list of known hosts
+    sudo -u gitlab -H ssh git@localhost
+    sudo -u gitlab -H ssh git@YOUR_DOMAIN_NAME
+    sudo -u gitlab -H ssh git@YOUR_GITOLITE_DOMAIN_NAME
 ## Test if everything works so far