Chore/improv

[naggingant]

Needs your confirmation

• Write files in /tmp instead of /backups which requires to be run as root, which is not very good for security
• Set shell options so
  • undefined variables will be a failure
  • the program exits on the first failed line

[PuKoren]

Thank you! I think it does not cause any problem to change the location
The reason I initially did a separate directory was in case we want to mount a disk at this specific location (if the backup becomes too big to be stored in the container). So large databases could be backed up even if the host nodes have limited disk space

It might still work well and be possible to mount a disk on /tmp as I don't think the container do so much i/o on it. Another option could be to give rights to all users on /backups so all users can write in it

Just a reminder if we were to apply this, the VOLUME in the Dockerfile will have to be updated or removed, and the README will need to be updated