Update Dockerfile

* Use nodejs, CHP from condaforge
* Bump the version of conda used

Dockerfile

@@ -30,26 +30,23 @@ RUN REPO=http://cdn-fastly.deb.debian.org && \
     echo "deb $REPO/debian jessie main\ndeb $REPO/debian-security jessie/updates main" > /etc/apt/sources.list && \
     apt-get -y update && \
     apt-get -y upgrade && \
-    apt-get -y install npm nodejs nodejs-legacy wget locales git &&\
+    apt-get -y install wget locales git bzip2 &&\
     /usr/sbin/update-locale LANG=C.UTF-8 && \
     locale-gen C.UTF-8 && \
     apt-get remove -y locales && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 ENV LANG C.UTF-8
 
-# install Python with conda
-RUN wget -q https://repo.continuum.io/miniconda/Miniconda3-4.0.5-Linux-x86_64.sh -O /tmp/miniconda.sh  && \
-    echo 'a7bcd0425d8b6688753946b59681572f63c2241aed77bf0ec6de4c5edc5ceeac */tmp/miniconda.sh' | shasum -a 256 -c - && \
+# install Python + NodeJS with conda
+RUN wget -q https://repo.continuum.io/miniconda/Miniconda3-4.2.12-Linux-x86_64.sh -O /tmp/miniconda.sh  && \
+    echo 'd0c7c71cc5659e54ab51f2005a8d96f3 */tmp/miniconda.sh' | md5sum -c - && \
     bash /tmp/miniconda.sh -f -b -p /opt/conda && \
-    /opt/conda/bin/conda install --yes python=3.5 sqlalchemy tornado jinja2 traitlets requests pip && \
+    /opt/conda/bin/conda install --yes -c conda-forge python=3.5 sqlalchemy tornado jinja2 traitlets requests pip nodejs configurable-http-proxy && \
     /opt/conda/bin/pip install --upgrade pip && \
     rm /tmp/miniconda.sh
 ENV PATH=/opt/conda/bin:$PATH
 
-# install js dependencies
-RUN npm install -g configurable-http-proxy && rm -rf ~/.npm
-
 ADD . /src/jupyterhub
 WORKDIR /src/jupyterhub