This is an example of subdomains in ruby on rails like a SaaS project could do.
Remember to add "lvh.me" at the beginning of the localhost url like this. http://lvh.me.localhost:3000
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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