title: Error installing Laravel 5.2 on forge
body: <p>I am trying to resolve this error, and looking for answer everywhere. I checked and they are all enabled in ini file, and it's giving me error.</p>
  
  <p>Loading composer repositories with package information
  Installing dependencies from lock file
  Your requirements could not be resolved to an installable set of packages.</p>
  
  <p>Problem 1
      - Installation request for sabre/xml dev-master -> satisfiable by sabre/xml[dev-master].
      - sabre/xml dev-master requires ext-dom * -> the requested PHP extension dom is missing from your system.</p>
  
  <pre><code>To enable extensions, verify that they are enabled in those .ini files:
      - /etc/php/7.0/cli/php.ini
      - /etc/php/7.0/cli/conf.d/10-mysqlnd.ini
      - /etc/php/7.0/cli/conf.d/10-opcache.ini
      - /etc/php/7.0/cli/conf.d/10-pdo.ini
      - /etc/php/7.0/cli/conf.d/20-calendar.ini
      - /etc/php/7.0/cli/conf.d/20-ctype.ini
      - /etc/php/7.0/cli/conf.d/20-curl.ini
      - /etc/php/7.0/cli/conf.d/20-exif.ini
      - /etc/php/7.0/cli/conf.d/20-fileinfo.ini
      - /etc/php/7.0/cli/conf.d/20-ftp.ini
      - /etc/php/7.0/cli/conf.d/20-gd.ini
      - /etc/php/7.0/cli/conf.d/20-gettext.ini
      - /etc/php/7.0/cli/conf.d/20-iconv.ini
      - /etc/php/7.0/cli/conf.d/20-igbinary.ini
      - /etc/php/7.0/cli/conf.d/20-imap.ini
      - /etc/php/7.0/cli/conf.d/20-json.ini
      - /etc/php/7.0/cli/conf.d/20-mbstring.ini
      - /etc/php/7.0/cli/conf.d/20-mcrypt.ini
      - /etc/php/7.0/cli/conf.d/20-mysqli.ini
      - /etc/php/7.0/cli/conf.d/20-pdo_mysql.ini
      - /etc/php/7.0/cli/conf.d/20-pdo_pgsql.ini
      - /etc/php/7.0/cli/conf.d/20-pdo_sqlite.ini
      - /etc/php/7.0/cli/conf.d/20-pgsql.ini
      - /etc/php/7.0/cli/conf.d/20-phar.ini
      - /etc/php/7.0/cli/conf.d/20-posix.ini
      - /etc/php/7.0/cli/conf.d/20-readline.ini
      - /etc/php/7.0/cli/conf.d/20-shmop.ini
      - /etc/php/7.0/cli/conf.d/20-sockets.ini
      - /etc/php/7.0/cli/conf.d/20-sqlite3.ini
      - /etc/php/7.0/cli/conf.d/20-sysvmsg.ini
      - /etc/php/7.0/cli/conf.d/20-sysvsem.ini
      - /etc/php/7.0/cli/conf.d/20-sysvshm.ini
      - /etc/php/7.0/cli/conf.d/20-tokenizer.ini
      - /etc/php/7.0/cli/conf.d/20-zlib.ini
      - /etc/php/7.0/cli/conf.d/25-memcached.ini
    You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
  </code></pre>