Note to self: wkhtmltopdf causes errors when generating PDF resumes

[jondkelley]

resume    |   File "/opt/venv/lib/python3.8/site-packages/pdfkit-0.6.1-py3.8.egg/pdfkit/pdfkit.py", line 159, in to_pdf
resume    |     raise IOError("wkhtmltopdf exited with non-zero code {0}. error:\n{1}".format(exit_code, stderr))
resume    | OSError: wkhtmltopdf exited with non-zero code -11. error:
resume    | QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
resume    | Loading page (1/2)

• https://github.com/madnight/docker-alpine-wkhtmltopdf
• Does it work with Alpine? mileszs/wicked_pdf#841
• https://github.com/skyzyx/alpine-pandoc/blob/master/Dockerfile