Allow deployment to specify the Procfile role to run.

[sdbondi]

For instance:

Procfile

web: ./my_web_site
worker: ./my_worker
arbprocess: ./my_other_process

Then setting:

DOKKU_ROLES="worker arbprocess"

will only run the worker and arbprocess processes.

Is this a good idea?

[statianzo]

It is a good idea. I'm in debate about if it should be SHOREMAN_CONCURRENCY="web=1,worker=2" to match the --concurrency flag of foreman. https://ddollar.github.io/foreman/

What do you think @sdbondi ?

[sdbondi]

@statianzo Yes I like that better!

Would be fairly tricky to parse in bash - should be fun to implement. I'll be able to give that a go next week unless you want to do it.

[statianzo]

Take a stab at it and make a PR.

[sdbondi]

Will do 👍