Fix NextAuth trusted host for Docker deployment

- Add trustHost: true to auth.config.ts
- Remove obsolete version field from docker-compose.yml

auth.config.ts

@@ -1,6 +1,7 @@
 import type { NextAuthConfig } from "next-auth"
 
 export const authConfig = {
+  trustHost: true,
   session: {
     strategy: "jwt",
     maxAge: 30 * 24 * 60 * 60, // 30 days in seconds

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   app:
     build: