Buildx support for arm containers

[nitrocode]

For now, I'm using make commands to setup the builder and run the docker buildx build commands. I'd like to use this plugin to build my containers with arm support.

Since there wasn't a ticket with buildx, I thought I'd create this for now.

[toote]

Could you elaborate on how you use buildx commands with docker compose?

I am not too familiar with the command and its capabilities, but it does not seem to be related so I don't think that the functionality it provides should live in this plugin. Or am I missing something?