create arm64 image for hugo

create arm64 image for hugo

• switch from docker to podman for building images
• build arm64 images
• add go, required to use the hugo modules feature - https://gohugo.io/installation/linux/

Fixes

• arm64 image for hugo - #86
• build failure when using modules (!195 (closed))

$ hugo 
Total in 1 ms 
Error: failed to load modules: failed to download modules: binary with name 'go' not found

Notes

The jobs need to be split, as arm64 compilation takes a while.

• jobs would hit the 1hr default timeout.
• would speed up the execution

The only way around this is to build hugo outside a container using GOARCH, and then copy the final build into the container. ( https://www.digitalocean.com/community/tutorials/building-go-applications-for-different-operating-systems-and-architectures )