Yikun Jiang created SPARK-43368:
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Summary: Address DOI comments about /etc/passwd
Key: SPARK-43368
URL: https://issues.apache.org/jira/browse/SPARK-43368
Project: Spark
Issue Type: Sub-task
Components: Spark Docker
Affects Versions: 3.5.0
Reporter: Yikun Jiang
chgrp root /etc/passwd && chmod ug+rw /etc/passwd
Wider permissions on /etc/passwd is concerning. What use case is broken if the
running user id doesn't exist?
echo ... >> /etc/passwd
Having the entrypoint itself modify /etc/passwd is fragile. Are there features
that are broken if the user doesn't exist in /etc/passwd (like PostgreSQL's
initdb that refuses to run)? Minimally, this should probably use useradd and
usermod rather than hand editing.
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