Add postgres upgrade magic

compose.yml

@@ -52,13 +52,17 @@ services:
       - POSTGRES_USER=root
       - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
       - POSTGRES_DB=n8n
+    configs:
+      - source: db_entrypoint
+        target: /docker-entrypoint.sh
+        mode: 0555
     secrets:
       - db_password
     healthcheck:
       test: ["CMD", "pg_isready", "-U", "root", "-d", "n8n"]
     volumes:
       - 'postgresql_data:/var/lib/postgresql/data'
-    #   - ./init-data.sh:/docker-entrypoint-initdb.d/init-data.sh
+    entrypoint: /docker-entrypoint.sh
     deploy:
       labels:
         backupbot.backup: "true"
@@ -82,3 +86,9 @@ networks:
   proxy:
     external: true
   internal_network:
+
+configs:
+  db_entrypoint:
+    name: ${STACK_NAME}_db_entrypoint_${DB_ENTRYPOINT_VERSION}
+    file: entrypoint.postgres.sh.tmpl
+    template_driver: golang