I did step by step with offical The tutorial here: https://wiki.alpinelinux.org/wiki/Setting_the_timezone
2016-9-14 Wednesday 17:21:31 CST
alpine date by default(
docker run --rm alpine date):
Tue Sep 13 04:02:31 UTC 2016
apk add tzdata cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime date
Tue Sep 13 04:05:10 GMT 2016
It’s ok in *unix host system. only happen in macOS with docker for mac.