mount error(13): Permission denied

On Linux systems with AppArmor the script fails to mount with Permission Denied. Disabling it solves the issue

Author: bit-man

Diff for: README.md

@@ -12,7 +12,7 @@ Run client in a loop:
 ```
 while true; do
     date
-    docker run -it --rm --name client-smb --cap-add=SYS_ADMIN --cap-add DAC_READ_SEARCH --link samba:samba client-smb:1
+    docker run -it --rm --name client-smb --cap-add=SYS_ADMIN --cap-add DAC_READ_SEARCH --security-opt apparmor:unconfined --link samba:samba client-smb:1
     date
     sleep 1
 done