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slimy It's a Ruby application, so Ruby type is required: https://docs.serv00.com/WWW/#ruby
For testing you can just use Puma or Unicorn.

slimy check it by whereis ruby command after activation of RVM environment.

slimy You need to activate your RVM environment first. Follow the guide: https://docs.serv00.com/RVM/

admin But discourse limit 1gb ram

slimy You need to set up your Ruby environment first. If you have problem with building it, you can try to limit number of processes used during compilation. You can do it by adding rvm_make_flags=( -B -j1 ) to ~/.rvmrc, e.g:

echo "rvm_make_flags=( -B -j1 )" > ~/.rvmrc

slimy we updated the instruction to install a newer version of Ruby - works fine.

Alternatively, you can use asdf: https://forum.serv00.com/d/498-ruby-install-keeps-failing/2