add user/group 999/999 for bot, add unit test when building docker image
add user/group 999/999 for bot, add unit test when building docker image

mukaiu/wechaty,wechaty/wechaty,zixia/wechaty,wechaty/wechaty,lijiarui/wechaty,binsee/wechaty,binsee/wechaty,Chatie/wechaty,mukaiu/wechaty,Chatie/wechaty,lijiarui/wechaty,Chatie/wechaty,zixia/wechaty,wechaty/wechaty,binsee/wechaty,mukaiu/wechaty