Change sLanguage web page keep in en_US

[chrishsieh]

Use docker image branch crm-docker-rewrite with churchcrm V3.0.9
When change sLangeuage, the web also show en_US

[chrishsieh]

docker httpd:2-alpine musl libc no support locales

##-add can change locale, but can't support php setlocale()
ENV LC_ALL zh_TW.UTF-8
ENV LANG zh_TW.UTF-8

[chrishsieh]

alpine when php setlocale need add putenv('LC_ALL=en_US'); to support gettext.

[chrishsieh]

docker-compose.yml add environment: LC_ALL: en_US can change localte, but can't change in churchcrm admin setting.