Use 2023 docker image as base

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:rolling
+FROM registry.gitlab.com/islandoftex/images/texlive
 
 LABEL "maintainer"="Hendrik Kleinwächter <hendrik.kleinwaechter@gmail.com>"
 LABEL "repository"="https://github.com/hendricius/the-sourdough-framework"
@@ -19,43 +19,8 @@ RUN apt-get update && \
     git \
     wget
 
-# Install base LaTeX system
-RUN apt-get install --yes -y --no-install-recommends \
-    texlive-full
-
-# Install LaTeX extras
-RUN apt-get install --yes -y --no-install-recommends \
-    latexmk \
-    lmodern \
-    fonts-lmodern \
-    tex-gyre \
-    texlive-pictures \
-    fonts-texgyre \
-    dvisvgm \
-    context \
-    python3-pygments \
-    python3-setuptools
-
-RUN apt-get install --yes -y --no-install-recommends \
-    biber \
-    texlive-bibtex-extra \
-    openjdk-21-jre-headless \
-    ghostscript \
-    graphviz
-
-RUN apt-get autoclean && apt-get --purge --yes autoremove
-
 WORKDIR /root
 
-# Latest make4ht and tex4ebook
-RUN git clone https://github.com/michal-h21/make4ht && \
-    cd make4ht && \
-    make justinstall
-
-RUN git clone https://github.com/michal-h21/tex4ebook.git && \
-    cd tex4ebook && git checkout v0.3i && \
-    make && make install
-
 # Support to build amazon kindle books
 RUN wget https://archive.org/download/kindlegen_linux_2_6_i386_v2_9/kindlegen_linux_2.6_i386_v2_9.tar.gz && \
     tar xzf kindlegen_linux_2.6_i386_v2_9.tar.gz && \