Making stretch and latest debian image

stretch/Dockerfile

+FROM debian:stretch
+
+MAINTAINER Pavel Vondruska <vondruska@cesnet.cz>
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends fakeroot libx11-6 \
+    && rm -r /var/lib/apt/lists/* \
+    && apt-get clean
+
+RUN mkdir /afs /packages /auto /storage /scratch
+
+RUN ln -sf /afs/ics.muni.cz/software /software
+
+CMD ["bash"]