[HOWTO] Building unofficial /e/ rom on a cloud VM - various options

I was checking out Google Cloud Platform …Yes I know we do not say the G-word on this site… they offer 300$ credit for 365 days. Built a ROM on their VM. The configuration part is a bit complicated there are too many different resources offered. All you need is the compute engine on which you set up the VM. One way to burn out the old un-used gmail ID. Good way to learn how to build on a remote VM.