From https://github.com/riboseinc/digicert-cli

Usage

1. obtain an api key from digicert: https://www.digicert.com/rest-api
2. if exists, set the IP restriction for your account

docker run --rm -e DIGICERT_API_KEY=<api-key> szabogyula/digicert-cli digicert 

list orders

docker run --rm -e DIGICERT_API_KEY=<api-key> szabogyula/digicert-cli digicert order list

download certificate

docker run --rm -e DIGICERT_API_KEY=<api-key> -v $PWD:/download szabogyula/digicert-cli digicert certificate download -o download --order_id <the-order-id>