fix(pkg/config): use storage endpoints

changes:
- Only one storage endpoint can be defined. This consists of a URL which
  can be used to specify whether the data is to be stored in a file or
  in a database.

docker-compose.yml

@@ -4,13 +4,13 @@ services:
     container_name: postgres
     environment:
     - PGTZ=${TZ}
-    - POSTGRES_PASSWORD=${PG_PASSWORD}
-    - POSTGRES_USER=${PG_USER}
-    - POSTGRES_DB=${PG_NAME}
+    - POSTGRES_DB=${POSTGRES_DB_NAME}
+    - POSTGRES_USER=${POSTGRES_DB_USER}
+    - POSTGRES_PASSWORD=${POSTGRES_DB_PASS}
     - TZ=${TZ}
     image: postgres:11.5-alpine
     ports:
-    - ${PG_EXTERN_PORT}:${PG_INTERN_PORT}/tcp
+    - 5432:5432
     restart: always
     volumes:
     - /etc/localtime:/etc/localtime:ro