Set variables for Ghost DB connection

.env

@@ -1,10 +1,6 @@
 #!/usr/bin/env bash
 
 # Ghost
-GHOST_EMAIL=admin@openrsc.com
-GHOST_PASSWORD=malwareinfection
-GHOST_DATABASE_NAME=ghost
-ALLOW_EMPTY_PASSWORD=no
 URL=http://localhost/blog
 
 # Nginx

docker-compose.yml

@@ -82,11 +82,11 @@ services:
         volumes:
             - "./etc/ghost/content:/var/lib/ghost/content"
         environment:
-            - url=http://localhost/blog
+            - url=${URL}
             - database__client=mysql
             - database__connection__host=mysql
-            - database__connection__user=root
-            - database__connection__password=root
+            - database__connection__user=${MARIADB_ROOT_USER}
+            - database__connection__password=${MARIADB_ROOT_PASSWORD}
             - database__connection__database=ghost
             - privacy__useUpdateCheck=false
         depends_on: