Add order of precedence for spark-config script

Author: mathbunnyru

images/pyspark-notebook/Dockerfile

@@ -58,7 +58,7 @@ RUN if [ -z "${scala_version}" ]; then \
     ln -s "spark-${APACHE_SPARK_VERSION}-bin-hadoop${HADOOP_VERSION}-scala${scala_version}" "${SPARK_HOME}"; \
   fi && \
   # Add a link in the before_notebook hook in order to source automatically PYTHONPATH && \
-  ln -s "${SPARK_HOME}/sbin/spark-config.sh" /usr/local/bin/before-notebook.d/spark-config.sh
+  ln -s "${SPARK_HOME}/sbin/spark-config.sh" /usr/local/bin/before-notebook.d/10spark-config.sh
 
 # Configure IPython system-wide
 COPY ipython_kernel_config.py "/etc/ipython/"