Add init db sql file

deploy/db_migrations/init.sql

@@ -0,0 +1,3 @@
+CREATE USER egommerce;
+CREATE DATABASE egommerce;
+GRANT ALL PRIVILEGES ON DATABASE egommerce TO egommerce;

deploy/egommerce-stack.yml

@@ -107,6 +107,7 @@ services:
       - POSTGRES_PASSWORD
     volumes:
       - postgres_data:/var/lib/postgresql/data
+      - ./db_migrations/init.sql:/docker-entrypoint-initdb.d/
     networks:
       - postgres-db-network
       - api-logger-network