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Building Common Workflow Language Tools (Using the Planemo Appliance)
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This tutorial is a gentle introduction to writing `Common Workflow Language`_
tools using the Planemo virtual appliance  (available for Docker_ and Vagrant_).
Check out ` these instructions <https://planemo.readthedocs.org/en/latest/appliance.html>`__
for obtaining the virtual appliance if you have not done so already.

.. include:: _writing_cwl_intro.rst

.. _Common Workflow Language: http://www.commonwl.org/
.. _GitHub: https://github.com/
.. _Docker: https://www.docker.com/
.. _Homebrew: http://brew.sh/
.. _linuxbrew: https://github.com/Homebrew/linuxbrew
.. _Vagrant: https://www.vagrantup.com/