v.21.1Improvements

Docker: Set Fixed UID/GID for ClickHouse User and Group in Server Images

Official CH changelog text
Docker: Explicitly set uid / gid of clickhouse user & group to the fixed values (101) in clickhouse-server Docker images. #19096 (filimonov).
The ClickHouse Docker images explicitly set the user ID (uid) and group ID (gid) of the clickhouse user and group to fixed values (101).

Why it matters

This feature ensures consistency and compatibility of file permissions and ownership when using ClickHouse Docker containers, avoiding potential conflicts with host system user IDs and improving ease of integration in various deployment environments.

How to use it

When running ClickHouse using the official Docker images, the clickhouse user and group will automatically have uid and gid set to 101, requiring no additional configuration from the user.

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