bao-qian d4b30e9e9d backup: Dereference symlinks when building tarball. ...

In docker-zulip installs, /etc/zulip/zulip.conf,
/etc/zulip/zulip-secrets.conf, and /home/zulip/uploads are all
symlinks into the `/data` directory which is mounted as a Docker
Volume.  By default, `tar` does not dereference symlinks, leading to
backups that are missing these critical pieces.

Add `-h` to the `tar` invocation, to follow symlinks, so backups in
Docker have all of their pieces.  Since none of the contents of the
backup intentionally use symlinks, this is safe.

Co-authored-by: Alex Vandiver <alexmv@zulip.com>

2024-10-01 09:51:54 -07:00

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