modified: ../.env

modified:   ../docker-compose.yaml
specify the db service into db directory

db/docker-compose.yml

@@ -0,0 +1,19 @@
+services:
+
+  db:
+    image: postgres:16
+    container_name: db
+    env_file:
+      - .env
+    ports:
+      - "${PGPORT}:${PGPORT}"
+    volumes:
+      - postgres-db:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_USER=${PGUSER}
+      - POSTGRES_PASSWORD=${PGPASSWORD}
+      - POSTGRES_DB=${PGDATABASE}
+    restart: unless-stopped
+
+volumes:
+  postgres-db: