deployDoc(doc, ...)deployApp. Do not supply
appDir, appFiles, or appPrimaryDoc;
these three parameters are automatically generated by deployDoc from
the document. This method discovers these additional files using
find_external_resources
from rmarkdown.
If you find that the document is missing dependencies, either specify the
dependencies explicitly in the document (the documentation for
find_external_resources
explains how to do this), or call deployApp directly and
specify your own file list in the appFiles parameter.