Azkfile com erro no mysql

Akzfile.js

/**
 * Documentation: http://docs.azk.io/Azkfile.js
 */
// Adds the systems that shape your system
systems({
  wordpress: {
    // Dependent systems
    depends: ["mysql"],
    // More images:  http://images.azk.io
    image: {"docker": "azukiapp/php-fpm"},
    workdir: "/azk/#{manifest.dir}",
    shell: "/bin/bash",
    wait: 20,
    mounts: {
      '/azk/#{manifest.dir}': path("."),
    },
    scalable: {"default": 1},
    http: {
      domains: [ "#{system.name}.#{azk.default_domain}" ]
    },
    ports: {
      // exports global variables
      http: "80/tcp",
    },
    envs: {
      // Make sure that the PORT value is the same as the one
      // in ports/http below, and that it's also the same
      // if you're setting it in a .env file
      APP_DIR: "/azk/#{manifest.dir}",
    },
  },
  mysql: {
   // More info about mysql image: http://images.azk.io/#/mysql?from=docs-full_example
   image: {"docker": "azukiapp/mysql:5.7"},
   shell: "/bin/bash",
   wait: 30,
   mounts: {
     '/var/lib/mysql': persistent("mysql_data"),
     // to clean mysql data, run:
     // $ azk shell mysql -c "rm -rf /var/lib/mysql/*"
   },
   ports: {
     // exports global variables: "#{net.port.data}"
     data: "3306/tcp",
   },
   envs: {
     // set instances variables
     MYSQL_USER         : "wordpress",
     MYSQL_PASSWORD     : "wordpress",
     MYSQL_DATABASE     : "#{manifest.dir}_development",
     MYSQL_ROOT_PASSWORD: "azk",
   },
   export_envs: {
     MYSQL_USER    : "#{envs.MYSQL_USER}",
     MYSQL_PASSWORD: "#{envs.MYSQL_PASSWORD}",
     MYSQL_HOST    : "#{net.host}",
     MYSQL_PORT    : "#{net.port.data}",
     MYSQL_DATABASE: "#{envs.MYSQL_DATABASE}"
    },
  },
  phpmyadmin: {
    // Dependent systems
    depends: ["mysql"],
    // More images:  http://images.azk.io
    image: { docker: "reduto/phpmyadmin" },
    wait: 35,
    scalable: {default: 1, limit: 1},
    http: {
      domains: [ "#{system.name}.#{azk.default_domain}" ]
    },
    ports: {
      http: "80/tcp",
    },
  }
});

setDefault("wordpress");