old_contents: 'use strict';
  
  let config = {
    env: 'test',
    debug: false,
  
    redis: {
      session: {
        host: 'redis',
        port: 6379,
        keyPrefix: 'shard:session:',
      },
      wechat: {
        host: 'redis',
        port: 6379,
        keyPrefix: 'shard:wechat:',
      },
    },
  
    mysql: {
      shard: {
        poolSize: 5,
        host: 'mysql',
        user: 'root',
        password: '',
        database: 'shard',
      },
    },
  };
  
  module.exports = config;
  
new_contents: 'use strict';
  
  let config = {
    env: 'test',
    debug: false,
  
    redis: {
      session: {
        host: 'localhost',
        port: 6379,
        keyPrefix: 'shard:session:',
      },
      wechat: {
        host: 'localhost',
        port: 6379,
        keyPrefix: 'shard:wechat:',
      },
    },
  
    mysql: {
      shard: {
        poolSize: 5,
        host: 'localhost',
        user: 'root',
        password: '',
        database: 'shard',
      },
    },
  };
  
  module.exports = config;
  
subject: 修复 CI 错误