Merge pull request #241 from markverg/patch-1

Add TZ to readme

README.md

@@ -217,6 +217,7 @@ The variables default their respective `DEFAULT` service variable.
 | `MYSQL_ROOT_USER` | root | If your MySQL host is not on `localhost`, but you want the icinga2 container to setup the DBs for itself, specify the root user of your MySQL server in this variable. |
 | `MYSQL_ROOT_PASSWORD` | *unset* | If your MySQL host is not on `localhost`, but you want the icinga2 container to setup the DBs for itself, specify the root password of your MySQL server in this variable. |
 | *other MySQL variables* | *none* | All combinations of MySQL variables aren't listed in this reference. Please see above in the MySQL section for this. |
+| `TZ` | UTC | Specify the TimeZone for the container to use|
 
 ## Volume Reference