+RUN echo 'Server = http://mirror.23media.de/archlinux/$repo/os/$arch' > /etc/pacman.d/mirrorlist \
+ && pacman-key --init \
+ && pacman-key --populate archlinux \
+ && pacman -Sy --noconfirm archlinux-keyring \
+ && pacman -S --noconfirm pacman \
+ && pacman-db-upgrade \
+ && pacman -Su --noconfirm \
+ && pacman -S --noconfirm \
+ git \
+ make \
+ mesa-libgl \
+ xorg-server-xvfb \
+ && paccache -rk 0 \
+ ;
+
+RUN pacman -S --needed --noconfirm \
+ freealut \
+ glew \
+ openal \
+ sdl2 \
+ sdl2_image \
+ sdl2_net \
+ sdl2_ttf \
+ zlib \
+ && paccache -rk 0 \
+ && mkdir -p /etc/openal \
+ && echo -e '[general]\ndrivers = null' > /etc/openal/alsoft.conf \