I want the PAYLOAD_PUBLIC_SERVER_URL to be dynamic for dev and prod environment, How to reference inside the string. Couldn't find anything in docs. ``` run: crontab: - command: "curl --location '${PAYLOAD_PUBLIC_SERVER_URL}/api/sessions/close-all' --header 'Content-Type: application/json'" # timing: "0 0 * * *" timing: "*/2 * * * *" allContainers: false # Run on a single container workingDir: "/var/www" ```