speedup build - use of pre-build image

.gitlab-ci.yml

@@ -1,10 +1,4 @@
-image: registry.hub.docker.com/bitnami/minideb:bullseye
-
-before_script:
-  # following ones get updated, so they are not installed from Debian package repo: python3-sphinx python3-pybtex python3-pybtex-docutils
-- install_packages pip jupyter-notebook python3-anyio python3-greenlet python3-click python3-jupyter-server python3-sqlalchemy python3-latexcodec python3-nbclient python3-nest-asyncio python3-smmap python3-soupsieve python3-toml
-  # limit to v0.14.0 until there is a fix for https://github.com/executablebooks/jupyter-book/issues/1964
-- pip install jupyter-book==0.14.0 && rm -r /root/.cache/pip
+image: container.psi.ch/linux-infra/documentation
 
 pages:
   stage: deploy

Readme.md

@@ -1,6 +1,6 @@
 # Overview
 
-This is the collection of all linux related documentation.
+This is the collection of all Linux related documentation.
 The documentation is build via a gitlab runner (git-pages) and the content is accessible at: https://linux.psi.ch 
 
 > The content is actually served at: http://linux-infra.gitpages.psi.ch/documentation, however on linux.psi.ch there is a web server redirecting to this URL.
@@ -8,4 +8,12 @@ The documentation is build via a gitlab runner (git-pages) and the content is ac
 
 To change stuff, simply edit the the Markdown and/or rst files and push to the git repository. The rendered page will update a few seconds (up to a minute) afterwards (Don't forget to refresh your browser cache for the page!). 
 
-> Ideally convert the .rst files you touch to Markdown!
+> Ideally convert the .rst files you touch to Markdown!
+
+# Administration
+
+Build required docker image:
+```bash
+docker build -t container.psi.ch:linux-infra/documentation .
+docker push container.psi.ch/linux-infra/documentation
+```