Move website builds to GitLab CI

Repo cloning will go by next week.

Signed-off-by: Andrei Jiroh Halili <ajhalili2006@gmail.com>

docker/Dockerfile

@@ -1,11 +1,16 @@
-# Since hadolint isn't in the package repos for Alpineyet, we'll copying from the offical
-# Docker image instead.
+# syntax=docker/dockerfile:1
 FROM ghcr.io/hadolint/hadolint:latest-alpine AS hadolint-binary
 
-# Since we're building against edge at risk
+# Since we're building against edge at risk, it is important to note
+# that anything might go wrong.
 FROM alpine:edge AS buildkit
 
-COPY --stage=hadolint-binary /bin/hadolint /usr/bin/hadolint
+# Since hadolint isn't in the package repos for Alpineyet, we'll copying from the offical
+# Docker image instead.
+COPY --from=hadolint-binary /bin/hadolint /usr/bin/hadolint
+
+ENV PACKAGES=/usr/local/lib/python3.11/site-packages
+ENV PYTHONDONTWRITEBYTECODE=1
 
 # https://squidfunk.github.io/mkdocs-material/setup/setting-up-social-cards/#linux but for Alpine
 # hadolint ignore=DL3018,DL3013
@@ -22,9 +27,30 @@ RUN apk add --no-cache \
      py3-pip \
      py3-wheel \
      shellcheck \
-  && pip3 install --no-cache \
+     gcc \
+     libffi-dev \
+     musl-dev \
+     nodejs \
+     npm \
+     yarn \
+     git \
+     git-fast-import \
+     openssh \
+  && pip3 install --no-cache-dir \
       mkdocs-material \ 
       mkdocs-redirects \
       mkdocs-git-revision-date-localized-plugin \
       pillow \
       cairosvg
+
+# Trust directory, required for git >= 2.35.2
+# Follows the docs for the Docker-based site build setup
+RUN git config --global --add safe.directory /docs &&\
+    git config --global --add safe.directory /site
+
+# Expose MkDocs development server port
+EXPOSE 8000
+
+COPY entrypoint.sh /usr/local/bin/entrypoint
+ENTRYPOINT [ "/usr/local/bin/entrypoint" ]
+CMD [ "serve", "--dev-addr=0.0.0.0:8000" ]