I would like to build images for the amd64 and Nvidia l4t platforms. Right now I pass the base image names amd64/debian:buster-slim and nvcr.io/nvidia/l4t-base:r32.6.1 into my Dockerfile. I then run a shell script that calls docker build twice with different base image names as --build-arg.

I've read about docker buildx which seems quite interesting. However I haven't found how I can define different base images for my target platforms.

Is this possible?