Upload dotenv's .env file to your remote server with Capistrano 3.

Add this line to your application's Gemfile:

group :development do
  gem 'capistrano-rails-dotenv', require: false
end

And then execute:

$ bundle

Or install it yourself as:

$ gem install capistrano-rails-dotenv

Require it in your Capfile:

require 'capistrano/rails/dotenv'

Add your .env file path to your deploy file, like this：

set :env_file, 'config/deploy/.env.production'

The default path is config/deploy/.env.<staging> if it is not set.

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