setup-ruby-path: Ensure that Ruby is installed [Linux] (#504)
setup-ruby-path: Ensure that Ruby is installed [Linux] (#504)

Fix the error:
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.sh: line 372:
exec: : not found
hanxue/linuxbrew,hanxue/linuxbrew,maxim-belkin/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,maxim-belkin/brew,Linuxbrew/brew,Linuxbrew/brew