add db.yml docker compose file

db.yml

@@ -0,0 +1,20 @@
+version: '3.6'
+
+networks:
+  gitea:
+    external: false
+
+services:
+  db:
+    image: postgres:9.6
+    restart: always
+    environment:
+      POSTGRES_USER: user
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: db
+    volumes:
+      - /mnt/HC_Volume_100342428/Post:/var/lib/postgresql/data
+    networks:
+      - gitea
+    ports:
+      - '5432:5432'