The same issue:
- intellij-support.jetbrains.com/hc/en-us/community/posts/115000765144-RubyMine-cannot-find-Gem-binaries-for-Docker-Compose-remote
- intellij-support.jetbrains.com/hc/en-us/community/posts/115000749330-How-to-setup-the-ruby-interpreter-path-in-Ruby-SDK-and-Gems-of-WSL-in-rubymine-2017-3-version-
- blog.jetbrains.com/ruby/2017/05/rubymine-2017-2-eap-1-docker-compose/#comment-231302