Using rbenv

On the working directory where the Amplify application is installed (usually /amp1/):

• Checkout the Amplify branch in which we are going to work
• rbenv install 2.7.3 (change the version accordingly)
• gem install bundler
• MAYBE (try to omit this): gem install rails
• BUNDLE_GITLAB__COM=bundler:UoS1DTrBrPPDAyfCS3p5 bundle install (this will install all the necessary packages for this Amplify version)
• pm2 start
• Migrate DBs (example: bin/rails db:migrate RAILS_ENV=development)

List available Ruby versions:

rbenv install -l

Set local Ruby version:

Sets a local per-project Ruby version by writing the version name to an .rbenv-version file in the current directory. This version overrides the global, and can be overridden itself by setting the RBENV_VERSION environment variable or with the rbenv shell command.

$ rbenv local rbx-1.2.4

When run without a version number, rbenv local reports the currently configured local version. You can also unset the local version:

$ rbenv local --unset

More information: https://javierjulio.com/rbenv/#section_3.2