%files section executed before %post ?

[jbd]

Hello,

the documentation (http://singularity.lbl.gov/docs-recipes#files) says:

Files are copied after any %post or installation procedures, so if you need the copied files or directories to exist during %post you must do this via %setup. Let’s add the avocado.txt into the container, to join tacos.txt.

With that in mind, I was thinking that this recipe would have work:

$ touch avocados.txt

$ cat test.singularity
Bootstrap: docker
From: ubuntu

%post
    mkdir -p /test/input

%files
avocados.txt /test/input

$ sudo singularity build test.simg test.singularity 
Using container recipe deffile: test.singularity
Sanitizing environment
Adding base Singularity environment to container
Docker image path: index.docker.io/library/ubuntu:latest
Cache folder set to /root/.singularity/docker
Exploding layer: sha256:1be7f2b886e89a58e59c4e685fcc5905a26ddef3201f290b96f1eff7d778e122.tar.gz
Exploding layer: sha256:6fbc4a21b806838b63b774b338c6ad19d696a9e655f50b4e358cc4006c3baa79.tar.gz
Exploding layer: sha256:c71a6f8e13782fed125f2247931c3eb20cc0e6428a5d79edb546f1f1405f0e49.tar.gz
Exploding layer: sha256:4be3072e5a37392e32f632bb234c0b461ff5675ab7e362afad6359fbd36884af.tar.gz
Exploding layer: sha256:06c6d2f5970057aef3aef6da60f0fde280db1c077f0cd88ca33ec1a70a9c7b58.tar.gz
Exploding layer: sha256:c6a9ef4b9995d615851d7786fbc2fe72f72321bee1a87d66919b881a0336525a.tar.gz
Adding files to container
Copying 'avocados.txt' to '/test/input'
/bin/cp: cannot create regular file '/usr/local/var/singularity/mnt/container//test/input': No such file or directory
ERROR: Failed copying file(s) into container
Running post scriptlet
+ mkdir -p /test/input
Finalizing Singularity container
Calculating final size for metadata...
Skipping checks
Building Singularity image...
Singularity container built: test.simg
Cleaning up...

Apparently, the files section is executed before the post section:

/bin/cp: cannot create regular file '/usr/local/var/singularity/mnt/container//test/input': No such file or directory

This recipe is working:

$ cat test2.singularity
Bootstrap: docker
From: ubuntu

%setup
    mkdir -p ${SINGULARITY_ROOTFS}/test/input

%files
avocados.txt /test/input

Maybe I misunderstood something ?

[vsoch]

I think this is a bug - we used to have files copied after, and now it's before.

[vsoch]

hey @jbd I just edited the page - take a look and let me know if everything looks ok.