dockerhub traccar

I am installing from dockerhub, I have already cloned the image, and I am at step 2 but it gives me the following message:
bash: /opt/traccar/traccar.xml: Permission denied

I do not understand what is missing

Do you have the file? Does it have the right permissions?

As stated your user should have at least read permissions on the file

Can you check with:
ls -l
To see if that is okay?
-rw-r--r-- 1 user user 4321 Dec 24 11:03 traccar.xml