It would be great if Podman could be used in addition to Docker for building images.

I had to install Docker to be able to use Copilot. But I don't think this has to be necessary as most of the Docker commands can be replaced by running podman in place of docker (as far as I know).

I realise, that it might be easier to accept a docker alias from the shell environment than it is to implement a new client like in dockerengine.go.
Under e2e there already seems to be an implementation that makes use of the bash shell context by running bash -c docker ...:

Would this be a possible future addition or is there any technical limitation preventing Podman from being used here?