Most containers default to UTC, and depending what you’re running, that may be fine.
I only mount /etc/timezone
/ /etc/localtime
if I’m running a container where it needs to be on the same timezone as the host (DB containers, anything where I want the logs in local time, etc). Not all containers use the TZ
env var, so bind mounting the timezone files from the host is a guaranteed way to sync them.
Take this report with the biggest grain of salt you can find.
Key points: