Files by age, newest first:

ls -lt

Docker images by age, newest first:

docker images --format "{{.CreatedAt}}\t{{.Repository}}:{{.Tag}}" | sort -r

Files by size, largest first:

ls -lS

Docker images by size, largest first:

docker images --format "{{.Size}}\t{{.Repository}}:{{.Tag}}" | sort -rh

Why why why??!