Updated Dockerfile

RUN pip install -U pip setuptools wheel

RUN python -m pip install numpy==1.16.2 bdsf==1.8.15 emcee

RUN python -m pip install pybind11 future pyregion sshtunnel pymysql psutil

RUN python -m pip install astropy_healpix pybind11 future pyregion sshtunnel pymysql psutil

RUN python -m pip install -U "/opt/DDFacet/[dft-support,moresane-support,testing-requirements,fits-beam-support]"

RUN cd /opt/DDFacet && rm -rf /opt/DDFacet/Dcbuild && python setup.py build