Slim with --include-exe doesn't preserve the executable

Expected Behavior

--include-exe=mkdir results in a slim image that includes mkdir without needing to specify any other --include-* options or --exec.

I'm sorry if this is 'user error' because I didn't read the manual properly.

Actual Behavior

--include-exe=mkdir seems to have no impact at all and creates an image that does not include mkdir.

.dockerenv
bin
dev/
dev/console
dev/pts/
dev/shm/
etc/
etc/host.conf
etc/hostname
etc/hosts
etc/mtab
etc/nsswitch.conf
etc/passwd
etc/pki/
etc/pki/ca-trust/
etc/pki/ca-trust/extracted/
etc/pki/ca-trust/extracted/openssl/
etc/pki/ca-trust/extracted/openssl/ca-bundle.trust.crt
etc/pki/ca-trust/extracted/pem/
etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem
etc/pki/java/
etc/pki/java/cacerts
etc/pki/tls/
etc/pki/tls/cert.pem
etc/pki/tls/certs/
etc/pki/tls/certs/ca-bundle.crt
etc/pki/tls/certs/ca-bundle.trust.crt
etc/resolv.conf
etc/ssl/
etc/ssl/cert.pem
etc/ssl/certs/
etc/ssl/certs/ca-bundle.crt
lib
lib64
proc/
run/
sys/
tmp/
usr/
usr/bin/
usr/bin/bash
usr/bin/ld.so
usr/bin/sh
usr/lib/
usr/lib/.build-id/
usr/lib/.build-id/46/
usr/lib/.build-id/46/d8c77d92436bbcafcf16f6737ab9d6a16f3a38
usr/lib/.build-id/7a/
usr/lib/.build-id/7a/cbb41bf6f1b7d977f1b44675bf3ed213776835
usr/lib64/
usr/lib64/ld-linux-x86-64.so.2
usr/lib64/libc.so.6
usr/lib64/libnss_dns.so.2
usr/lib64/libnss_files.so.2
usr/lib64/libresolv.so.2
usr/lib64/libtinfo.so.6.2

Steps to Reproduce the Problem

The following bash script should reproduce things (based on Debian under WSL2):

#!/bin/bash
cat > Dockerfile << DOCKERFILE
FROM rockylinux:9
RUN dnf -qy install /usr/bin/mkdir
DOCKERFILE
docker run --rm \
  -v $(pwd):/code \
  -v /var/run/docker.sock:/var/run/docker.sock dslim/slim:1.40.11 \
  --crt-api-version 1.25 \
  build \
  --dockerfile Dockerfile \
  --dockerfile-context /code \
  --http-probe-off \
  --include-exe=mkdir \
  --tag test:slim

docker run --rm -it test:slim mkdir -pv /tmp/tmp/tmp

Specifications

• Version: 1.40.11
• Platform: Linux WR189341E94201 5.15.153.1-microsoft-standard-WSL2 #1 SMP Fri Mar 29 23:14:13 UTC 2024 x86_64 GNU/Linux (Docker version 27.2.0, build 3ab4256)

Start by running the supplied Dockerfile and slim build reproduction with --include-exe=mkdir, then trace how that option is handled during the build command. Done means the resulting image contains mkdir and docker run --rm -it test:slim mkdir -pv /tmp/tmp/tmp succeeds without additional include or exec options.