Custom image build generated root-owned files in /home/matlab
Closed this issue · 3 comments
I successfully built a custom image using a product list:
$ export MATLAB_PRODUCT_LIST="MATLAB Financial_Toolbox Parallel_Computing_Toolbox MATLAB_Coder MATLAB_Compiler MATLAB_Compiler_SDK MATLAB_Parallel_Server MATLAB_Production_Server MATLAB_Report_Generator MATLAB_Test MATLAB_Web_App_Server"
$ docker build --build-arg MATLAB_PRODUCT_LIST="${MATLAB_PRODUCT_LIST}" -t custom-matlab:R2024b .
[+] Building 254.0s (9/9) FINISHED docker:default
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 4.34kB 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/mathworks/matlab-deps:R2024b 1.0s
=> [1/5] FROM docker.io/mathworks/matlab-deps:R2024b@sha256:3747753686c2cfeee04c9c7558787db93f608a034c6d3c44b14e750b12b06 0.0s
=> [2/5] RUN export DEBIAN_FRONTEND=noninteractive && apt-get update && apt-get install --no-install-recommends - 9.5s
=> [3/5] RUN adduser --shell /bin/bash --disabled-password --gecos "" matlab && echo "matlab ALL=(ALL) NOPASSWD: ALL" 0.6s
=> [4/5] WORKDIR /home/matlab 0.0s
=> [5/5] RUN wget -q https://www.mathworks.com/mpm/glnxa64/mpm && chmod +x mpm && sudo HOME=${HOME} ./mpm insta 175.9s
=> exporting to image 66.9s
=> => exporting layers 66.9s
=> => writing image sha256:7643b414569ee9733d02cccaea29932d631aa42837f463b7cd6625abfb7e615d 0.0s
=> => naming to docker.io/library/custom-matlab:R2024b 0.0s
However, the resulting image contained a root-owned /home/matlab/.matlab directory, causing a MATLAB error:
< M A T L A B (R) >
Copyright 1984-2024 The MathWorks, Inc.
R2024b Update 1 (24.2.0.2740171) 64-bit (glnxa64)
September 20, 2024
To get started, type doc.
For product information, visit www.mathworks.com.
>> Warning: Unable to create preferences folder in /home/matlab/.matlab/R2024b. Preferences folder location must be writable. Using a temporary preferences folder for this MATLAB session. See the <a href="matlab: helpview([docroot
'/matlab/helptargets.map'],'matlabenvironment_prefdir_location')">preferences documentation</a> for more details.
>> exit
The /home/matlab/.matlab contents are trivial.
Reading the Dockerfile, I'm guessing it was mpm when running as USER matlab, in WORKDIR /home/matlab, but as root via sudo [...] ./mpm install .... I've never used mpm, nor many of the products I installed, so I don't have a guess which specific package created the files.
$ docker run --rm -it --entrypoint /bin/bash custom-matlab:R2024b
matlab@9741fd944aa9:~$ ls -al /home/matlab/
total 28
drwxr-x--- 1 matlab matlab 4096 Nov 8 04:51 .
drwxr-xr-x 1 root root 4096 Nov 8 04:48 ..
-rw-r--r-- 1 matlab matlab 220 Nov 8 04:48 .bash_logout
-rw-r--r-- 1 matlab matlab 3771 Nov 8 04:48 .bashrc
drwxr-xr-x 3 root root 4096 Nov 8 04:48 .matlab
-rw-r--r-- 1 matlab matlab 807 Nov 8 04:48 .profile
matlab@9741fd944aa9:~$ ls -l .matlab/
total 4
drwxr-xr-x 2 root root 4096 Nov 8 04:48 R2025a
matlab@9741fd944aa9:~$ ls -l .matlab/R2025a/
total 4
-rw-r--r-- 1 root root 0 Nov 8 04:48 creation.timestamp
-rw-r--r-- 1 root root 1 Nov 8 04:48 migratePref.txt
matlab@0c452b2cb194:~$ cat ~/.matlab/R2025a/migratePref.txt
T
I worked around it with a hack to the Dockerfile to repair the ownership:
# Fix root owned preferences directory
USER root
RUN chown -R matlab:matlab /home/matlab/.matlab
USER matlab
Thank you for reporting this issue.
The issue is with the 2024.3 release of mpm, and you can work around this by setting the environment variable MW_SPROOT_SETTINGSXML=1 before the mpm install command as shown in this Dockerfile
We will keep this issue open until a future release of MPM fixes this.
Hope this helps, and once again thank you for the detailed report!
Hi @richardkmichael
An update for the MATLAB Package Manager (version 2024.4) has been released which fixes this bug.
Thank you for reporting this!
reference: a345307
@prabhakk-mw Thank you!