elixir box

#!/bin/sh

# this script is intended to run on a debian8 box

set -e

USERNAME=user

_prep () {
  apt-get update
  apt-get install -q --yes --force-yes debconf-utils
  echo en_US ISO-8859-1 >/etc/locale.gen
  echo en_US.UTF-8 UTF-8 >>/etc/locale.gen
  cat <<EOF | debconf-set-selections
locales locales/default_environment_locale select en_US.UTF-8
locales locales/locales_to_be_generated multiselect en_US ISO-8859-1, en_US.UTF-8 UTF-8
EOF
  apt-get install locales
}

_system () {
  apt-get install -q --yes --force-yes \
          gcc wget curl sudo debconf-utils imagemagick postgresql postgresql-client \
          libgraphicsmagick-dev git libtool-bin
  adduser -q --system --home /home/xerpa --shell /bin/bash --uid $uid xerpa
  usermod -a -G sudo xerpa
  echo $USERNAME:$USERNAME | chpasswd
}

_nodejs () {
  apt-get install -q --yes --force-yes nodejs npm
  cat <<EOF >/usr/local/bin/node
#!/bin/sh
exec nodejs "\$@"
EOF
  chmod 755 /usr/local/bin/node
}

_pgsql () {
  /etc/init.d/postgresql start
  su postgres -c "psql -c \"create role $USERNAME with login superuser password '$USERNAME'\""
}

_elixir () {
  wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
  dpkg -i erlang-solutions_1.0_all.deb
  apt-get update
  apt-get install -q --yes --force-yes \
          elixir erlang-xmerl erlang-tools erlang-dev erlang-parsetools
}

_prep
_system
_pgsql
_nodejs
_elixir