+ # ShellInABox service endpoint URL for a given VM. If empty, do not
+ # offer web shell logins.
+ #
+ # E.g., using a path-based proxy server to forward connections to shell hosts:
+ # https://webshell.uuid_prefix.arvadosapi.com
+ #
+ # E.g., using a name-based proxy server to forward connections to shell hosts:
+ # https://*.webshell.uuid_prefix.arvadosapi.com