With the full understanding that "docker images" are their own special little things: $ docker run --rm ubuntu:22.04 bash -c 'command -v ex; command -v ed;

With the full understanding that "docker images" are their own special little things: $ docker run --rm ubuntu:22.04 bash -c 'command -v ex; command -v ed; command -v vi; command -v perl;' /usr/bin/perl and the same result for "debian:stable" --- edit: I just realized that's because apt is _written in_ perl, but tomato, tomahto, and it may very well be that they picked perl for that same universal-binary reason