Add default MYSQL_PASSWORD and example LocalSettings volume

mediawiki/stack.yml

@@ -12,10 +12,15 @@ services:
       - database
     volumes:
       - /var/www/html/images
+      # After initial setup, download LocalSettings.php to the same directory as
+      # this yaml and uncomment the following line and use compose to restart
+      # the mediawiki service
+      # - ./LocalSettings.php:/var/www/html/LocalSettings.php
   database:
     image: mariadb
     environment:
       # @see https://phabricator.wikimedia.org/source/mediawiki/browse/master/includes/DefaultSettings.php
       MYSQL_DATABASE: 'my_wiki'
       MYSQL_USER: 'wikiuser'
+      MYSQL_PASSWORD: ''
       MYSQL_RANDOM_ROOT_PASSWORD: 'yes'