[lytedev]

I did something really similar to this! It's a tiny bash script and systemd-timer (like a cron job): https://github.com/lytedev/netlify-ddns

[lytedev]

Oh, wow! My little repo is mentioned at the bottom here: https://github.com/lukehsiao/netlify-ddns-rs

It's very similar to yours, so I recommend you check it out!