Question docker timezone update

[chenks]

is there any way to update the TZ in a docker without having to clear it and set it up again?
i've set up xteve and just noticed the time is 4 hours behind.

 

[fredbert]

Maybe it depends on the container.

I just stopped my FreshRSS container and changed the TZ environment parameter from Europe/London to Europe/Paris. Restarted the container and opened a Bash shell in the Terminal view. Using commands env and date both show that timezone string and CET are used. I quickly switched back.

However, my AirConnect container is different (doesn't have TZ) but the environment parameters for setting up the airupnp and aircast services only seem to get imported on initial run (after a Clear action).

 

[one-eyed-king]

The TZ environment parameter only has effect if the os package "tzdata" (Timezone data) is available in the image.

 

[akahan]

Where tzdata is not available in the image, is there a (relatively simple) way to get the container's logs to show the right time for my local timezine instead (I think) UTC?