Hosting a custom domain at home

[Littlelight]

How can I host a custom domain at home? I've registered www.domain.com at namecheap.com and it is using cloudflare dns.

How can I use a test.domain.com subdomain to redirect to my home router to host a website?

https://github.com/RMerl/asuswrt-merlin/wiki/DDNS-Sample-Scripts#cloudflare

Above gives some sort of script but how do I run this script?> Would appreciate some guidance/instructions.

Home is a fixed broadband line but with dynamic IP address.

AC68u running 384.6 firmware.

Thanks

 

[RMerlin]

Use any of the supported DDNS services, and create a CNAME within your domain. Less trouble than messing with custom scripts.