README
postgresql broke when upgrading, so to fix
rm -rf /usr/local/var/postgres && initdb /usr/local/var/postgres -E utf8
Upgraded Rails from 5.1.7 to 5.2 https://thomasleecopeland.com/2015/08/06/running-rails-update.html
https://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#the-update-task
bin/rails app:update
Active Storage for images https://www.microverse.org/blog/how-to-build-an-image-upload-feature-with-rails-and-active-storage https://hixonrails.com/ruby-on-rails-tutorials/ruby-on-rails-active-storage-aws-s3-google-cloud-platform-microsoft-azure/
This README would normally document whatever steps are necessary to get the application up and running.
Things you may want to cover:
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Ruby version
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System dependencies
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Configuration
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Database creation
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Database initialization
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How to run the test suite
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Services (job queues, cache servers, search engines, etc.)
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Deployment instructions
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...