Docker: Adjust postgres container to create regular *and* test database

Author: Turbo87

docker-compose.yml

@@ -28,12 +28,12 @@ services:
   postgres:
     image: postgres:9.6
     environment:
-      POSTGRES_DB: cargo_registry
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: password
     ports:
       - 5432:5432
     volumes:
+      - ./docker/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
       - postgres-data:/var/lib/postgresql/data
 
   backend:

docker/docker-entrypoint-initdb.d/create-databases.sql

@@ -0,0 +1,2 @@
+CREATE DATABASE cargo_registry;
+CREATE DATABASE cargo_registry_test;