Proclet supports $PORT auto assignment in Proclet-0.30

proclet command (foreman for perl) that included in Proclet distribution, now supports auto assignment of $PORT that written in Procfile.

https://metacpan.org/release/Proclet

In Procfile

web: plackup -p $PORT -a app.psgi
admin: plackup -p $PORT -a admin.psgi

web.1 would be assigned port 5000. admin.1 would be 5100. If you run 2 web processes, web.2 would be 5001.
You can change base TCP port number with -p option.

$ proclet -c web:2 -p 3000

Proclet、foremanと同じようにProcfileの$PORT自動割り当てに対応しました。