I have a dual core box running a web test environment, gitlab-ce and Plex. I schedule a weekly reboot and all is grand. The box does 60w under load to give an idea of max cost to run.

I use duckdns to deal with my broadband providers DHCP.

I use the same type of containers in test as live and just git push between them. Live is a cloud server with a bare git repo which checks out files to a public folder on receive.

Although my box is 10yrs old it has an hp remote control feature. Saves me getting out the loft ladder :-)