upgrade postgres in docker container

.gitignore

@@ -6,4 +6,5 @@ __pycache__
 /hypercorn.access
 /hypercorn.error
 .pyc
-server.md
\ No newline at end of file
+server.md
+dump.sql
\ No newline at end of file

docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.8'
 services:
   db:
     container_name: nacsos_postgres
-    image: postgres:14.2-bullseye
+    image: postgres:15.1-alpine
     restart: always
     environment:
       POSTGRES_USER: root