Container on MIPS hardware

Not sure this is the right place to ask…

Appartently the container 7.x feature is also supported on SMIPS hardware. Assuming I want to build one what processor architecture should I use ? My goal is to try this https://github.com/Fluent-networks/tailscale-mikrotik.

Any feedback most welcome

Just for own education: why Tailscale if there is already ZeroTier?