Here are our AMI build scripts: https://github.com/vyos/build-ami/
They should be fairly straightforward to use, but if you run into problems, don't hesitate to ask.

The reason for the ancient AMI on the marketplace is that marketplace updates take over a month, while image update after AMI deploy takes minutes. ;)

This ticket had already resolved.

I cut new ticket https://phabricator.vyos.net/Q108

Thank you.