Rails New With Specific Rails Version

Rails New With Specific Rails Version

# make directory for new rails app
mkdir app
cd app

# specify ruby version 
echo 2.6.3 > .ruby-version
echo "source 'https://rubygems.org'" > Gemfile

echo "gem 'rails', '~> 6.1.0.alpha', git: 'https://github.com/Shopify/rails'" >> Gemfile
OR gem 'rails', '~> 6.1.0.alpha', git: 'https://github.com/Shopify/rails'

rvm gemset use 2.6.3@appname --create
bundle install

# create rails app using specified version, and overwrite current Gemfile
bundle exec rails new . --force --skip-bundle
bundle exec rails new . --force --skip-bundle --api


Re intall bundler

gem install bundler
sudo gem install bundler