Added new config option rails_webpacker_use_webpacker4

[zealot128]

Webpacker 4 changed default config files babelrc and postcssrc:
rails/webpacker@8d496a0

Thus, the default export is different in this case....

not totally fan of the conditional :/

/cc @hendrixfan

[arBmind]

The reasoning seems legit.

I'm also not a fan of multiple bool variables. I suggest to simply use rails_webpacker: 4
The conditional might be enhanced later, but the variables are hard to change once established.

[zealot128]

Great suggestion, fixed it!

[arBmind]

Thank you! Seems legit.
Once TravisCI works again, this should be merged.

[zealot128]

Yeah... that rvm public key has changed ....

Had this problem also for newer Ruby versions.

Something like this fixed it for a new system:

rvm_gpg_keys: '7D2BAF1CF37B13E2069D6956105BD0E739499BDB 409B6B1796C275462A1703113804BB82D39DC0E3'
rvm_gpg_key_server: 'hkp://keys.gnupg.net'

Unfortunately, if the script already imported the old pubkey, than gpg --list-keys returns 0 = success, even when called with two keys.

Do you or any other people working on fixing CI?
Otherwise.. I might look into it, maybe add one of our own OS apps as a second test case with sidekiq and stuff (HRfilter).