searchd fails to initialize time zone from TZ environment variable

[sabnak]

Bug Description:

When running the Manticore Docker container (manticoresearch/manticore:10.1.0) with TZ=Europe/Moscow set, the system time inside the container is correct (MSK, GMT+3), but searchd fails to initialize the time zone and falls back to UTC.

Steps to Reproduce:

1. Run container with environment variable:
   docker-compose.yml

...
environment:
  - TZ=Europe/Moscow
...

2. Confirm system time is correct
   docker exec -it manticore date
   Output:

Mon Jul  7 11:47:34 MSK 2025

3. Verify timezone file exists:

docker exec -it manticore ls -l /usr/share/zoneinfo/Europe/Moscow
Output:

-rw-r--r-- 1 root root 1535 Apr 22 13:11 /usr/share/zoneinfo/Europe/Moscow

4. Check searchd logs:

/var/log/manticore/searchd.log
Output:

[Mon Jul  7 08:36:22.023 2025] [1] WARNING: Error initializing time zones: Error resolving local time zone from TZ='Europe/Moscow' and time zone dir '/usr/share/zoneinfo/'
[Mon Jul  7 08:36:22.023 2025] [1] Using local time zone 'UTC'

docker log manticore
Output:

[Mon Jul  7 08:36:22.022 2025] [1] Using time zone 'Europe/Moscow'

stdout logs are different from the logs on the disk? Anyway, time still incorrect.

Expected Behavior:

searchd should successfully initialize with the Europe/Moscow time zone (GMT+3) as specified by the TZ environment variable.

Actual Behavior:

searchd fails to resolve the time zone despite:

• Correct TZ environment variable (Europe/Moscow)
• Valid timezone file present (/usr/share/zoneinfo/Europe/Moscow)
• Correct system time (confirmed by date command)
• Proper file permissions (644 root:root)

Environment:

• Manticore Image: manticoresearch/manticore:10.1.0
• Host OS: Debian Linux 6.1.0-37-amd64
• Docker Version: 28.3.0 (build 38b7060)

Reproduction Rate: 100%

Docker image version:

manticoresearch/manticore:10.1.0

Have you tried the latest development version?

No

Internal Checklist:

^{To be completed by the assignee. Check off tasks that have been completed or are not applicable.}

• Implementation completed
• Tests developed
• Documentation updated
• Documentation reviewed
• Changelog updated