add NeXus libs for HDF5/NeXus support

Author: farhi

Dockerfile

@@ -53,7 +53,9 @@ RUN apt-get -y update \
    evince \
    gnuplot \
    octave \
-   libopenmpi-dev
+   libopenmpi-dev \
+   libnexus1 \
+   libnexus-dev
 
 # install McXtrace, and make sure we use the python from the system for it
 RUN apt install -y ./*.deb