Badge linking to datasette on hub.docker.com

README.md

@@ -6,6 +6,7 @@
 [![Documentation Status](https://readthedocs.org/projects/datasette/badge/?version=latest)](http://datasette.readthedocs.io/en/latest/?badge=latest)
 [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/simonw/datasette/blob/master/LICENSE)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://black.readthedocs.io/en/stable/)
+[![docker: datasette](https://img.shields.io/badge/docker-datasette-blue)](https://hub.docker.com/r/datasetteproject/datasette)
 
 *A tool for exploring and publishing data*