pin postgres to version 17 in example docker-compose files

docker-compose.dev.yaml

@@ -1,6 +1,6 @@
 services:
   db:
-    image: postgres:latest
+    image: postgres:17
     restart: unless-stopped
     container_name: postgres
     volumes:

docker-compose.yaml

@@ -13,7 +13,7 @@ services:
       # Image folder
       - ./images/:/data/images/
   db:
-    image: postgres:latest
+    image: postgres:17
     restart: unless-stopped
     volumes:
       - ./postgres:/var/lib/postgresql/data