Make sure AWS CLI is installed: https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html
- Login to AWS CLI using Cloudflare R2 Token: https://developers.cloudflare.com/r2/examples/aws-cli/
$ aws configure
AWS Access Key ID [None]: <access_key_id>
AWS Secret Access Key [None]: <access_key_secret>
Default region name [None]: auto
Default output format [None]: json