Please be advised that there is a better repo here 🤣🤣

https://github.com/lubien/fly-uptime-kuma

Personal lightweight Uptime-Kuma

Create a 1Gb volume for uptime-kuma

fly volumes create hophamlam_uptimekuma_vol --region sin --size 1

Paste the volume name to [mount] part in fly.toml. Example:

[mounts]
  destination = "/app/data"
  source = "hophamlam_uptimekuma_vol"

flyctl deploy

Add custom domain

Change into your domain + Use CNAME to point your domain to auto-generated fly.clio app url

flyctl certs create status.mydomain.com

Do the same with www.status.mydomain.com

Reference:

https://noted.lol/easy-off-site-monitoring-with-fly-io-and-uptime-kuma/