How to download and setup doctree
Open terminal and run command
                                            git clone https://github.com/rurema/doctree.git
                                        
                                        git clone is used to create a copy or clone of doctree repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with doctree https://github.com/rurema/doctree/archive/master.zip
Or simply clone doctree with SSH
                                            [email protected]:rurema/doctree.git                                    
                                    If you have some problems with doctree
You may open issue on doctree support forum (system) here: https://github.com/rurema/doctree/issuesSimilar to doctree repositories
Here you may see doctree alternatives and analogs
fastlane rails jekyll discourse gitlabhq awesome-interview-questions devise ruby ruby-style-guide brew diaspora selenium capistrano sinatra spree rubocop awesome-ruby sidekiq grape postal activeadmin Command-line-text-processing kaminari simple_form faker fluentd factory_bot awesomo graal chef