Single page app rewriting with Caddy server

Caddyfile

localhost:80
gzip
ext .html
root /home/deploy/current/build/www
proxy /graphql localhost:3000

rewrite /login {
  to {path} /login
}

rewrite /app {
  to {path} /
}

errors {
  log caddy_error.log {
    size 50 # Rotate after 50 MB
    age  30 # Keep rotated files for 30 days
    keep 5  # Keep at most 5 log files
  }
  404 404.html # Not Found
  500 500.html # Internal Server Error
}