[NuLink] Image user should not be 'root'#139
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Automated security fix
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This fix addresses the security vulnerability of running containers as the 'root' user. By adding a 'USER nonrootuser' line after creating a non-root user with 'useradd -m nonrootuser', the container now executes commands under a user with limited privileges. This significantly reduces the risk of container escape and potential system compromise, as non-root users have restricted access to the underlying host system and resources.
Severity: high
NuLink used AI to generate this PR.