adding Singularity file

Author: vsoch

README.md

@@ -4,6 +4,8 @@
 
 Singularity Python is a python module and command line tool for working with <a href="https://singularityware.github.io" target="_blank">Singularity</a> containers, specifically providing functions to visualize, package, and compare containers. Currently, most functions use Singularity on the command line, and some require sudo.
 
+We currently require Python > version 3 to use various timezone functions. If you are unable to install version 3.0, we provide a [Singularity.container](Singularity.container) for you to use instead. See the 
+
 The Singularity-Python code is licensed under the MIT open source license, which is a highly permissive license that places few limits upon reuse. This ensures that the code will be usable by the greatest number of researchers, in both academia and industry. The following examples are provided:
 
 Please see our [complete docs](https://github.com/singularityware/singularity-python/wiki)

Singularity.container

@@ -0,0 +1,30 @@
+Bootstrap: docker
+From: continuumio/miniconda3
+
+%runscript
+exec /opt/conda/bin/sregistry "$@"
+
+%apprun shub
+exec /opt/conda/bin/shub "$@"
+
+%apprun sregistry
+exec /opt/conda/bin/sregistry "$@"
+
+%labels
+maintainer [email protected]
+
+%post
+apt-get update && apt-get install -y git
+
+# Dependncies
+/opt/conda/bin/conda install -y numpy scikit-learn cython pandas
+
+# Install Singularity Python
+cd /opt
+git clone -b development https://www.github.com/vsoch/singularity-python
+cd singularity-python
+/opt/conda/bin/pip install setuptools
+/opt/conda/bin/pip install -r requirements.txt
+/opt/conda/bin/pip install pyasn1==0.3.4
+/opt/conda/bin/python setup.py sdist
+/opt/conda/bin/python setup.py install