Honor a TZ env var to set the timezone of the docker image

[mossroy]

Logs of docker images are currently in UTC timezone.
In most docker images, it's possible to choose a different timezone by passing a "TZ" environment variable.
Could it be also supported in wait4x docker image?

From what I read, it might be as simple as adding the "tzdata" package in the Dockerfile (as your docker image is based on Alpine).
See https://jakeroid.com/blog/how-to-set-timezone-in-your-docker-image/

[mossroy]

I'll try to provide a PR for that

[atkrad]

I'll try to provide a PR for that

Thanks @mossroy, It would be nice.