1. Go to https://www.cloudflare.com/developer-platform/r2/ and create an account
2. Create a bucket in R2 (make sure it is not public)
3. Go to "Manage R2 API Tokens" and generate a token for your own bucket. Keep that around to add it to your environment variables

Configure your environment with environment variables that are shown in .env.sample.

cp .env.sample .env

Install pg_dump on the machine where you plan to run this script

pg_dump does not allow to directly specify the password.

So you should configure the password using .pgpass file.

bundle exec ruby run.rb --name DB_NAME`