I am not sure, but something tells me it won't be happening, as the MIPSBE core count is mostly 1 and the CPU mostly around 650 Mhz paired with 64 or 128 MB RAM. These are not specs you want to run an container on.
Noted... Had a spare rb951 and thought i'd try setup a simple deno web server in a container after I was done fiddling with it in a virtual sim(cloonix)...