dh_xsf_substvars
Xorg X server - development files
RUN apt-get update && \
apt-get install -y xserver-xorg-dev
RUN apt-get update && \
apt-get install -y xserver-xorg-dev
RUN apt-get update && \
apt-get install -y xserver-xorg-dev
RUN apt-get update && \
apt-get install -y xserver-xorg-dev