1#================= 2# Use cmake 3.6 from jessie-backports 3# should only be used for images based on debian jessie. 4 5RUN echo "deb http://archive.debian.org/debian jessie-backports main" | tee /etc/apt/sources.list.d/jessie-backports.list 6RUN echo 'Acquire::Check-Valid-Until "false";' > /etc/apt/apt.conf 7RUN sed -i '/deb http:\/\/deb.debian.org\/debian jessie-updates main/d' /etc/apt/sources.list 8RUN apt-get update && apt-get install -t jessie-backports -y cmake && apt-get clean 9