Install with:

poetry install

Then run the build:

poetry run sphinx-build -E -b html  docs dist/docs -v

Gives this message:

sphinx-demo/docs/index.rst:14: WARNING: undefined label: mycontainer
sphinx-demo/docs/index.rst:16: WARNING: undefined label: othercontainer

Examine the files in dist/docs/index.html.

The behavior I want is for the referenced text to be hyperlinked "Cont. 1" instead of the monospace without link.

Also, at the actual container, the container number should appear instead of just the content.