a CMD provided in an appendix is ignored at run (not during build)

Bug description

The use of CMD in an appendix is not igrnored for build but is somehow ignored for run.

Expected behaviour

$ repo2docker --appendix 'CMD ["jupyter", "lab", "--ip", "0.0.0.0", "--no-browser"]' <source-repository>

Should build and run a docker container using the command defined by CMD.

Actual behaviour

The image is built with the CMD, but still runs with the "built-in" CMD. I don't know how.

Here's the end of the build

Step 51/52 : CMD ["jupyter", "notebook", "--ip", "0.0.0.0"]
 ---> Running in e62e373bfe20
Removing intermediate container e62e373bfe20
 ---> 7b31488d3ac1
Step 52/52 : CMD ["jupyter", "lab", "--ip", "0.0.0.0", "--no-browser"]
 ---> Running in ceba06478f9a
Removing intermediate container ceba06478f9a
 ---> 7ace45a225ff

But then jupyter notebook launches. If instead I docker run 7ace45a225ff, then I get jupyter lab.

Your personal set up

OS: macOS Sonoma 14.7

Docker version:


GSLAL0320120132 % docker version                                                                                                                                                                   25T16:41
Client:
Cloud integration: v1.0.23
Version:           20.10.14
API version:       1.41
Go version:        go1.16.15
Git commit:        a224086
Built:             Thu Mar 24 01:49:20 2022
OS/Arch:           darwin/amd64
Context:           default
Experimental:      true

Server: Docker Desktop 4.7.0 (77141) Engine: Version: 20.10.14 API version: 1.41 (minimum version 1.12) Go version: go1.16.15 Git commit: 87a90dc Built: Thu Mar 24 01:46:14 2022 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.5.11 GitCommit: 3df54a852345ae127d1fa3092b95168e4a88e2f8 runc: Version: 1.0.3 GitCommit: v1.0.3-0-gf46b6ba docker-init: Version: 0.19.0 GitCommit: de40ad0


- repo2docker version: 2024.07.0

jupyterhub / repo2docker