Merge pull request #4 from blechta/master

Add biber

Author: thomasWeise

image/Dockerfile

@@ -84,6 +84,7 @@ RUN echo "Initial update." &&\
     echo "Installing TeX Live and ghostscript and other tools." &&\
 # install TeX Live and ghostscript as well as other tools
     apt-get install -f -y --no-install-recommends \
+          biber \
           cm-super \
           dvipng \
           fonts-dejavu \