virtualbox – Access MailHog WebGui Running in Virtual Machine from Host Machine’s Web Browser

I have a Debian 10.5 LAMP server in virtualbox 6.1, running with ISPConfig and Roundcube.

I installed MailHog to test my email configs, however MailHog’s webGUI is only available on:
localhost:8025 and/or

How can I change the address of MailHog’s webGUI to match the ip of my virtualmachine? For example:

I’ve read the docs at:

but, I must be missing something.. (zero coding skills)