feat: update Docker configuration for improved performance and add local environment example

docker-compose.local.yml

@@ -18,7 +18,7 @@ services:
     image: supabase/postgres:15.8.1.060
     restart: unless-stopped
     ports:
-      - '54322:5432'
+      - '54322:54322'
     volumes:
       - supabase-db-data:/var/lib/postgresql/data
       - ./docker/db/zzz-role-passwords.sh:/docker-entrypoint-initdb.d/zzz-role-passwords.sh:ro
@@ -317,7 +317,6 @@ services:
       context: .
       dockerfile: Dockerfile
       args:
-        # NEXT_PUBLIC_CI=true bypasses the HTTPS check during build
         NEXT_PUBLIC_CI: 'true'
         NEXT_PUBLIC_SITE_URL: http://localhost:3000
         NEXT_PUBLIC_SUPABASE_URL: http://localhost:8000