menu: create volumes with current user

Most services won't explicitly create ./volumes-folder, hence Docker
will create volumes as owned by root. This will later cause problems for
build hooks trying to prepare directories.

E.g. adding nextcloud later will fail with:

    Error running PreBuildHook on 'nextcloud'
    [Errno 13] Permission denied: './volumes/nextcloud'

Creating volumes as part of the initial git-clone will ensure it's owned
by the correct user.

For existing users, also fix it's owner when the menu is started.

.gitignore

@@ -1,6 +1,5 @@
 #ignore data folders for containers
 /services/
-/volumes/
 /backups/
 /.tmp/*
 __pycache__

menu.sh

@@ -339,6 +339,8 @@ function do_project_checks() {
 		[ -f .project_outofdate ] && rm .project_outofdate
 		echo "Project is up to date" >&2
 	fi
+	# volumes shouldn't be owned by root, change it to the current user
+	[[ $(id -u) != "0" ]] && sudo chown $(id -u):$(id -g) volumes
 }
 
 function do_env_checks() {

volumes/.gitignore

@@ -0,0 +1,3 @@
+# This file is needed for the volumes-folder to be created with the correct
+# ownership as part of the initial 'git clone'.
+*