Caddyfile for Nextcloud 21 and Caddy 2.4

Caddyfile

# Thanks to https://caddy.community/

example.com {

  ## optional logging here
  
  # Change root path accordingly
  root * /usr/local/www/nextcloud
  file_server
  
  encode gzip zstd

  ## Recommended version of php for Nextcloud 21 is 7.4
  ## Uncomment one of the following and edit accordingly
  # php_fastcgi 127.0.0.1:9000 {
  # php_fastcgi unix//var/run/php/php-fpm7.4.sock {
    env PATH /bin
    env front_controller_active true
  }

  # Only one header is needed, as nextcloud sets the rest
  header {
    Strict-Transport-Security "max-age=15768000;"
  }

  # Redirect dav access
  redir /.well-known/cardav /remote.php/dav 301
  redir /.well-known/caldav /remote.php/dav 301

  # .htaccess, /data /config, etc. shouldn't be accessible from outside
  @forbidden {
    path  /.htaccess
    path  /data/*
    path  /config/*
    path  /db_structure
    path  /.xml
    path  /README
    path  /3rdparty/*
    path  /lib/*
    path  /templates/*
    path  /occ
    path  /console.php
  }
  respond @forbidden 404

}