Depois eu descrevo melhor o projeto aqui
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Postgress
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Ruby
2.6.2
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Rails
5.2.2
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graphviz
gem install bundler
bundle install
cp config/database.sample.yml config/database.yml
rails db:create
rails db:migrate
rails db:seed
rails s
docker-compose build
docker-compose run web rake db:create db:migrate
docker-compose run web rake db:seed
docker-compose up