add docker compose

docker-compose.yml

@@ -0,0 +1,17 @@
+version: '3.9'
+
+services:
+  db:
+    image: postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_PASSWORD: mysecretpassword
+      POSTGRES_USER: postgres
+      POSTGRES_DB: taco-api
+    ports:
+      - 5432:5432
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+
+volumes:
+  postgres-data: