add postgres

Docker/postgres/docker-compose.yml

@@ -0,0 +1,23 @@
+version: "3"
+
+services:
+  postgres:
+    container_name: postgres
+    image: postgres:14.2
+    environment:
+      - POSTGRES_USER=username
+      - POSTGRES_PASSWORD=password
+      # - POSTGRES_DB=database
+    volumes:
+      - ./postgres:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    restart: unless-stopped
+    networks:
+      nginx:
+        aliases:
+          - postgres
+
+networks:
+  nginx:
+    external: true