docker-compose build出错

[mocusez]

1.failed to solve: rpc error: code = Unknown desc = failed to solve with frontend dockerfile.v0: failed to create LLB definition: docker.io/phusion/baseimage:latest: not found
pull的底层镜像貌似现在要指定版本，我指定完了以后能开始build

2.Package 'php-mcrypt' has no installation candidate
无解了 貌似Ubuntu 20.04/18.04 现在 会遇到这样的问题，没写过dockerfile，不太敢动