Ubuntu 16.04 and every other use UTC by default.
I want to change to JST. So I search about this on the web, and some site said to use like this.
Show list of time zone
$ timedatectl list-timezones
But I executed this command, and then above message occurs.
Error about bus happen
$ timedatectl list-timezones
Failed to create bus connection: No such file or directory
It is a problem to use systemd. Ubuntu has used systemd since 16.04.
To use systemd on docker container is pretty tough. So I used tzdata. It is still available to install via apt on Ubuntu 16.04, but if you can also change time zone with systemd. See this document.
I write this config in Dockerfile like this. And build the container.
Dockerfile
FROM ubuntu:16.04
RUN \
apt-get -y install tzdata && \
ln -sf /usr/share/zoneinfo/Asia/Tokyo /etc/localtime
Then I enter the container and check time zone.
root@4dbd2aff2747:~# cat /etc/timezone
Asia/Tokyo
root@9dce4012502e:~# strings /etc/localtime
TZif2
JCST
TZif2
JCST
JST-9
The docker container's time zone becomes JST!
