I'm fairly new to kubernetes and docker, so be patient with me.

I am trying to mount a Windows share in linux which is contained in docker, which is a kubernetes pod.

I managed to get all the correct permissions in kubernetes and docker to mount the share manually. However I need this to be done via the Dockerfile, since it needs to be automated.

This is my Dockerfile:

WORKDIR /app
COPY ./start-script.sh ./start-script.sh

RUN apt-get update && apt-get install -y cifs-utils
RUN mkdir Windows-Share
# RUN mount.cifs <Window share folder> /app/Windows-Share/ -o username=<username>,password=<password>,domain=<domain>

ENTRYPOINT ["bash", "./start-script.sh"]

Here is my start-script.sh:

#!/bin/bash
mount.cifs <Window share folder> /app/Windows-Share/ -o username=<username>,password=<password>,domain=<domain>
exec dotnet <dotnet dll>

Now it should be noted that I don't have access to any of the docker commands, they are all handled by kubernetes. After kubernetes creates the pod the logs will show:

mount error(13): Permission denied

Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

This confuses me because if I log into the kubernetes pod and run the mount command manually it mounts fine. What am I missing?