Bundler 2 required?

[chadfrost]

I'm using bundler = 2.1.4, and when the action runs I get "You must use Bundler 2 or greater with this lockfile." If I remove Gemfile.lock from my repo, it works fine. I'm not savvy enough to know where the bundle version used in the GitHib Actions comes from -- is there any way to control which version is being picked up?

[Li357]

Did some digging, looks like the ruby version (and in particular the rubygems version) of the action's Docker container is old. So the preinstalled bundler version is below 2.

I've created a fork that runs on ruby 2.7 and comes preinstalled with rubygems and [email protected]: https://github.com/Li357/jekyll-deploy-gh-pages

It also includes nodejs since I'm doing some server-side math typesetting.