[container] Image requires root privileges to run

[timo-reymann]

When attempting to run the container as a non-root user, it fails to start. This requires running the container with --user root, which is not ideal for security and portability.

Steps to Reproduce:

1. Pull the latest image.

2. Run the container with a non-root UID/GID, e.g.:

   docker run --user 1000:1000 <image>

3. Observe that it fails to start.

Expected Behavior:
The container should run successfully without root privileges, following best practices for container security.

Actual Behavior:
Container startup fails unless run as root.

Suggested Fix:

• Ensure proper file ownership and permissions in the image.
• Configure a non-root default user in the Dockerfile via USER instruction.
• Avoid binding privileged ports or operations that require root.