Sphinx docs generation (#22697)

* add sphinx

* switch theme

* Experiment: sphinx docs generation updated (#22708)

* moved build to root gitignore, added .gitkeep

* Improved makefile doc build process

- Removed auto-generated docs from source control
- Moved apidoc.sh into Makefile
- Removed make.bat (can add back if Windows support desired)
- Added sphinx viewcode and markdown extensions
- Added feature to source /docs in build, so any .rst file in /docs will
  override the respective file during the build process
- Added feature to copy all markdown/rst files from source into /build/
  during build process so they can be easily referenced while writing
  docs (see examples in index.md)
- Wrote basic starter index.md file

TODO: Add new dependencies to Pipfile [dev-packages]

* Revert accidental modification to Pipfile

* fix command substitution

* exclude xx

* improve docs

* dont include all docs in release build

* Add dockerfile

* update title

* include normal readme

* build container in CI

* use buildkit

* add login

Co-authored-by: Chad Bailey <chadbailey904@gmail.com>
old-commit-hash: b816b5b6442c21e63a09108c70986eeedb0372b2

docs/docker/Dockerfile

@@ -0,0 +1,46 @@
+FROM ghcr.io/commaai/openpilot-base:latest
+
+ENV PYTHONUNBUFFERED 1
+
+ENV OPENPILOT_PATH /home/batman/openpilot/
+ENV PYTHONPATH ${OPENPILOT_PATH}:${PYTHONPATH}
+
+RUN mkdir -p ${OPENPILOT_PATH}
+WORKDIR ${OPENPILOT_PATH}
+
+COPY Pipfile Pipfile.lock $OPENPILOT_PATH
+RUN pip install --no-cache-dir pipenv==2020.8.13 && \
+    pipenv install --system --deploy --dev --clear && \
+    pip uninstall -y pipenv
+
+
+# TODO: add to pipfile
+RUN pip install sphinx-rtd-theme==1.0.0 sphinx==4.2.0 myst-parser==0.15.2
+
+COPY SConstruct ${OPENPILOT_PATH}
+
+COPY ./pyextra ${OPENPILOT_PATH}/pyextra
+COPY ./third_party ${OPENPILOT_PATH}/third_party
+COPY ./site_scons ${OPENPILOT_PATH}/site_scons
+COPY ./laika ${OPENPILOT_PATH}/laika
+COPY ./laika_repo ${OPENPILOT_PATH}/laika_repo
+COPY ./rednose ${OPENPILOT_PATH}/rednose
+COPY ./rednose_repo ${OPENPILOT_PATH}/rednose_repo
+COPY ./tools ${OPENPILOT_PATH}/tools
+COPY ./release ${OPENPILOT_PATH}/release
+COPY ./common ${OPENPILOT_PATH}/common
+COPY ./opendbc ${OPENPILOT_PATH}/opendbc
+COPY ./cereal ${OPENPILOT_PATH}/cereal
+COPY ./panda ${OPENPILOT_PATH}/panda
+COPY ./selfdrive ${OPENPILOT_PATH}/selfdrive
+
+RUN scons -j$(nproc)
+
+COPY ./docs ${OPENPILOT_PATH}/docs
+RUN git init .
+WORKDIR ${OPENPILOT_PATH}/docs
+RUN make html
+
+FROM nginx:1.21
+COPY --from=0  /home/batman/openpilot/build/docs/html /usr/share/nginx/html
+COPY ./docs/docker/nginx.conf /etc/nginx/conf.d/default.conf