Issue title: How to deploy it on router?
 Issue body: So how to deploy it on my router?
> There is my router info :
` System Version :  the lastest Openwrt/LEDE build  with x64 `

Would you tell me how to make this or would you like to release  installation package?

 Comments: 
 Comment 0: Please see here for supported operating systems:
https://docs.pi-hole.net/main/prerequesites/

If your Openwrt/LEDE router runs docker, then we have a docker image 

https://github.com/pi-hole/docker-pihole
 Comment 1: Your docker image url is 404.
 Comment 2: https://github.com/pi-hole/docker-pi-hole
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