File permission displayed a lot question marks in docker container [duplicate] - linux

Question

This question already has answers here:
Strange file permission in docker container (question marks on permission bit and user bit)
(2 answers)
Closed 3 years ago.
I wrote a Dockerfile, the last contents are
RUN echo "root:root" | chpasswd
RUN echo "beakerx:beakerx" | chpasswd
RUN usermod -aG sudo beakerx
RUN echo beakerx | sudo -S chown -R beakerx:beakerx /home/beakerx/.local
RUN echo beakerx | sudo -S find /home/beakerx/.local -type d -exec chmod 755 {} \;
RUN echo beakerx | sudo -S find /home/beakerx/.local -type f -exec chmod 644 {} \;
RUN id
RUN ls -la /home/beakerx/.local
RUN ls -la /home/beakerx/.local/share
USER beakerx
RUN id
RUN ls -la /home/beakerx/.local
RUN ls -la /home/beakerx/.local/share
When I build this image, it gave me the following errors.
Step 17/29 : RUN echo "root:root" | chpasswd
---> Running in b07756b764ef
---> 11a182191463
Removing intermediate container b07756b764ef
Step 18/29 : RUN echo "beakerx:beakerx" | chpasswd
---> Running in 2f2bc836b1af
---> dee6ebdf5b9c
Removing intermediate container 2f2bc836b1af
Step 19/29 : RUN usermod -aG sudo beakerx
---> Running in 8a1ccfffd565
---> d7815406e070
Removing intermediate container 8a1ccfffd565
Step 20/29 : RUN echo beakerx | sudo -S chown -R beakerx:beakerx /home/beakerx/.local
---> Running in 19aebc73f517
---> a8cb84a563c5
Removing intermediate container 19aebc73f517
Step 21/29 : RUN echo beakerx | sudo -S find /home/beakerx/.local -type d -exec chmod 755 {} \;
---> Running in 7c2434fa279a
---> 5ce4b0b0e859
Removing intermediate container 7c2434fa279a
Step 22/29 : RUN echo beakerx | sudo -S find /home/beakerx/.local -type f -exec chmod 644 {} \;
---> Running in 5f57457f1fe5
---> 1bb42b3ef8f3
Removing intermediate container 5f57457f1fe5
Step 23/29 : RUN id
---> Running in 101209499f50
uid=0(root) gid=0(root) groups=0(root)
---> e45945b090ab
Removing intermediate container 101209499f50
Step 24/29 : RUN ls -la /home/beakerx/.local
---> Running in d337b58c1571
total 12
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 .
drwxr-xr-x 25 beakerx beakerx 4096 Sep 7 01:30 ..
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 share
---> 7fd474369e15
Removing intermediate container d337b58c1571
Step 25/29 : RUN ls -la /home/beakerx/.local/share
---> Running in e05cd55aaae6
total 12
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 .
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 ..
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 jupyter
---> 03191c2d9fc8
Removing intermediate container e05cd55aaae6
Step 26/29 : USER beakerx
---> Running in 40b2d522ea0f
---> 604503b2152b
Removing intermediate container 40b2d522ea0f
Step 27/29 : RUN id
---> Running in e7b8ed6a1165
uid=1000(beakerx) gid=1000(beakerx) groups=1000(beakerx),27(sudo)
---> 5987e9d9f0bb
Removing intermediate container e7b8ed6a1165
Step 28/29 : RUN ls -la /home/beakerx/.local
---> Running in 4c65bd4a383e
ls: cannot access '/home/beakerx/.local/share': Permission denied
total 8
drwxr-xr-x 6 beakerx beakerx 4096 Sep 7 01:30 .
drwxr-xr-x 25 beakerx beakerx 4096 Sep 7 01:30 ..
d????????? ? ? ? ? ? share
ERROR: Service 'beakerx-cling-prebuild' failed to build: The command '/bin/sh -c ls -la /home/beakerx/.local' returned a non-zero code: 1
That's quite strange, I can see the right permission using root, but a lot of question marks using other users. When I removed these debugging code and run this docker image, it gave me PermissionError: [Errno 13] Permission denied: '/home/beakerx/.local/share/jupyter/runtime' errors.
I have searched a lot on the Internet, but couldn't found some helpful info about this.

Answer 1

This is a very weird bug in older docker versions. It happens if the first user that access the directory is non-root. Just change the order of the commands to access the dir as user.
Run something like ls /home/beakerx/, before issuing USER beakerx.
It worked for me.