The article is written by the people who created jail.run [0]
Ten years in with Docker and Linux containers I felt something was very wrong so I looked at how Solaris and FreeBSD were doing it and I saw the light (too).
I would agree with them: bringing the Dockerfile format to jails doesn't make any sense, unless you just want to attract curious Linux users.
Dockerfiles are useful and familiar but are also an abomination.
What we need is solid way to do configuration management. I guess this is what they are trying to do with their own configuration system [1] but I am not sold on it yet.
Anyway those people are doing some good work !
- [0] https://jail.run/
Some time ago I entertained the idea of a Terraform provider for jails. There's no API tho, but that's fixable.
Would Daemonless[0] solve this problem, or is it at least a step in the right direction?
If said system also targets Linux then that would be cool. Otherwise we just get another new way to do something on one OS and doesn’t at all help bridge the gap.