How to store credentials and secrets in Ruby on Rails 6

Ruby on Rails has a support for storing credentials and secrets with rails credentials:edit

• Rails 5.1 introduced secrets https://github.com/rails/rails/pull/28038
• Rails 5.2 replaced secrets with credentials https://github.com/rails/rails/pull/30067
• Rails 6. added support for multi environment credentials https://github.com/rails/rails/pull/33521

export EDITOR="code --wait" # or export EDITOR=vim
# Create global credentials at config/credentials.yml.enc and config/master.key
rails credentials:edit
 
# Create credentials for a given environment at config/credentials/<environment>.yml.enc
# It takes precedence over global credentials
rails credentials:edit --environment production
rails credentials:edit --environment development