Thanks for providing a Docker file! It looks like your file changed FROM debian:stable to FROM debian:buster-slim and removed libcap2-bin from the list of installed packages. I wasn't aware of these "slim" images but that's something we may want to incorporate in our existing Docker file. Why did you remove libcap2-bin though? Is it not available in the slim image?
I didn't remove libcap2-bin but added it. I think it's missing from the original Dockerfile, but pulled by the base image.
Oh, right. I like your patch because it reduces the image size from ~120 MB to ~70 MB. Other than that, we still need to cross-compile the Docker images for ARM, right? We have #33088 (moved) for that purpose.