Alpine

Установить proxy:

echo export http_proxy=http://proxy.example.com:3128 >> /etc/profile
echo export https_proxy=http://proxy.example.com:3128 >> /etc/profile

Установить часовой пояс:

setup-timezone -z Etc/UTC

https://wiki.alpinelinux.org/wiki/Alpine_setup_scripts#setup-timezone
https://wiki.alpinelinux.org/wiki/Setting_the_timezone