chore(docker): separate services in compose

docker-compose.yml

@@ -14,6 +14,7 @@ services:
       - './priv/docker/postgres/init.sql:/docker-entrypoint-initdb.d/init.sql'
       - 'db_data:/var/lib/postgresql/data'
     restart: unless-stopped
+
   app:
     image: 'joaodubas/ex_trainer:${EX_TRAINER_TAG:-dev}'
     build:
@@ -56,6 +57,7 @@ services:
     scale: 3
     entrypoint: ./priv/docker/service/docker-entrypoint.sh
     command: local-cookie
+
   test:
     image: 'joaodubas/ex_trainer:test'
     build: