Require Linux/ARM64 docker image for abiosoft/caddy

[odidev]

Hi Team,  

I have been working on building abiosoft/caddy images for both amd64 and arm64 platforms. Although the base image (abiosoft/caddy: builder) is not available for arm64. I have successfully build and tested the builder image for both amd64 and amd64. 

Added GitHub actions for deploying base images for both platforms.

Added file: odidev@1a1459f

Do you have any plans for releasing arm64 images?  
It will be very helpful if an arm64 image is available. If interested, I will raise a PR.