Php 我的流浪汉没有'；t显示错误为500的任何响应

我是Vagrant的新手，在用ZendFramework 2安装Vagrant服务器时遇到了麻烦。下面是我的配置文件

# -*- mode: ruby -*-
# vi: set ft=ruby :

VAGRANTFILE_API_VERSION = '2'

@script = <<SCRIPT
DOCUMENT_ROOT_ZEND="/var/www/zf/public"
apt-get update
apt-get install -y apache2 git curl php5-cli php5 php5-intl libapache2-mod-php5
echo "
<VirtualHost *:80>
    ServerName skeleton-zf.local
    DocumentRoot $DOCUMENT_ROOT_ZEND
    <Directory $DOCUMENT_ROOT_ZEND>
        DirectoryIndex index.php
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>
" > /etc/apache2/sites-available/skeleton-zf.conf
a2enmod rewrite
a2dissite 000-default
a2ensite skeleton-zf
service apache2 restart
cd /var/www/zf
curl -Ss https://getcomposer.org/installer | php
php composer.phar install --no-progress
echo "** [ZEND] Visit http://localhost:8085 in your browser for to view the application **"
SCRIPT

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.box = 'bento/ubuntu-14.04'
  config.vm.network "forwarded_port", guest: 80, host: 8085
  config.vm.hostname = "skeleton-zf.local"
  config.vm.synced_folder '.', '/var/www/zf'
  config.vm.provision 'shell', inline: @script
  config.vm.network "private_network", ip: "0.0.0.0"

  config.vm.provider "virtualbox" do |vb|
    vb.customize ["modifyvm", :id, "--memory", "1024"]
  end

end

当我尝试在apache中运行任何comand时，我发现：

vagrant@skeleton-zf:~$ apache2 -V
[Fri Oct 02 16:19:06.465441 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined
[Fri Oct 02 16:19:06.466385 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_PID_FILE} is not defined
[Fri Oct 02 16:19:06.466830 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_RUN_USER} is not defined
[Fri Oct 02 16:19:06.469081 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_RUN_GROUP} is not defined
[Fri Oct 02 16:19:06.469143 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Fri Oct 02 16:19:06.474489 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
AH00526: Syntax error on line 74 of /etc/apache2/apache2.conf:
Invalid Mutex directory in argument file:${APACHE_LOCK_DIR}

---

我的问题是一条隐藏的500错误消息，因为我没有安装php5 mysql包。配置正常

vagrant@skeleton-zf:~$ apache2 -V
[Fri Oct 02 16:19:06.465441 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOCK_DIR} is not defined
[Fri Oct 02 16:19:06.466385 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_PID_FILE} is not defined
[Fri Oct 02 16:19:06.466830 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_RUN_USER} is not defined
[Fri Oct 02 16:19:06.469081 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_RUN_GROUP} is not defined
[Fri Oct 02 16:19:06.469143 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
[Fri Oct 02 16:19:06.474489 2015] [core:warn] [pid 5758] AH00111: Config variable ${APACHE_LOG_DIR} is not defined
AH00526: Syntax error on line 74 of /etc/apache2/apache2.conf:
Invalid Mutex directory in argument file:${APACHE_LOCK_DIR}