#!/usr/bin/env sh

alpine_install='alpine-chroot-install'
alpine_directory='/alpine'

# DL alpine install script
if ! test -f "$alpine_install"; then
  wget https://raw.githubusercontent.com/alpinelinux/alpine-chroot-install/v0.6.0/alpine-chroot-install -O "$alpine_install" \
    && echo 'a827a4ba3d0817e7c88bae17fe34e50204983d1e  alpine-chroot-install' | sha1sum -c \
      || exit 1
  chmod +x "$alpine_install"
fi

# Install Alpine
if ! test -d "$alpine_directory"; then
  sudo sh ./$alpine_install -p "build-base git zsh lua-filesystem luarocks lua-toml" || exit 1
fi

# Set rc_sys="prefix" to not disturb systemd on current system
sudo sed -e 's/#rc_sys=""/rc_sys="prefix"/g' -i "$alpine_directory/etc/rc.conf"

# Launch chroot
sh $alpine_directory/enter-chroot