Update .env example & next.config

frontend/example.env

@@ -4,7 +4,7 @@ NEXTAUTH_URL=http://localhost:3000
 # Generate a random secret: https://generate-secret.vercel.app/32 or `openssl rand -base64 32`
 NEXTAUTH_SECRET=super-random-secret
 
-# Create a GitHub OAuth app here: https://github.com/settings/applications/new
+# Create a Google OAuth app here: https://developers.google.com/identity/gsi/web/guides/get-google-api-clientid
 # Authorization callback URL: https://authjs.dev/reference/core/providers_github#callback-url
 GOOGLE_CLIENT_ID=something.apps.googleusercontent.com
 GOOGLE_CLIENT_SECRET=google-client-secret
@@ -18,6 +18,9 @@ GOOGLE_CLIENT_SECRET=google-client-secret
 # API Documentation: https://docs.id.gov.sg/introduction/overview
 SGID_CLIENT_ID=sgid-client-id
 SGID_CLIENT_SECRET=sgid-client-secret
-SGID_PRIVATE_KEY=sgid-private-key
-
+# Private key is needed for retrieving & decrypting the user info from SGID
+# SGID_PRIVATE_KEY=sgid-private-key
 
+# Chat API Endpoint (where the backend is running)
+# (set to canonical URL of your app in production e.g. https://www.example.com)
+CHAT_API=http://localhost:8000/api/chat

frontend/next.config.js

@@ -3,9 +3,6 @@ const nextConfig = {
   experimental: {
     serverComponentsExternalPackages: ["llamaindex"],
   },
-  env: {
-    CHAT_API: "http://localhost:8000/api/chat",
-  },
   compiler: {
     // Enables the styled-components SWC transform
     styledComponents: true