build docker error, not find localtime in unix about tz-rs HOT 1 CLOSED

The tzdata package is not installed in the docker, so the symlink /etc/localtime is either absent or broken.
In this case, the TimeZone::local() function returns an error, and you need to handle it in your code.
On non-UNIX platforms, since the path /etc/localtime is always invalid, the function always returns UTC.

Note: if you are willing to embed the time zone definitions in your binary, you can use the tzdb::local_tz function, which also works on Windows since it only queries for the current time zone name.

from tz-rs.