Create postBuild

postBuild

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+#!/bin/bash
+
+# run matplotlib once to generate the font cache
+python -c "import matplotlib as mpl; mpl.use('Agg'); import pylab as plt; fig, ax = plt.subplots(); fig.savefig('test.png')"
+	
+test -e test.png && rm test.png
+
+jupyter labextension install @jupyterlab/latex
+jupyter lab build