Simplify image build?

Dockerfile

@@ -1,24 +1,17 @@
 FROM python:3.10.2-slim-bullseye
+
 ARG PELICAN_VERSION=4.7.2
 ARG SOURCE_SANS_VERSION=3.046R
 ARG MATPLOTLIB_VERSION=3.5.1
-RUN apt update && apt upgrade -y
-RUN apt install wget unzip fontconfig -y
 
-RUN wget https://github.com/adobe-fonts/source-sans/releases/download/${SOURCE_SANS_VERSION}/OTF-source-sans-${SOURCE_SANS_VERSION}.zip -O source-sans.zip && \
-    unzip source-sans.zip -d source-sans && \
-    rm source-sans.zip && \
-    mkdir -p /usr/share/fonts/opentype/adobe/ && \
-    cp source-sans/OTF/*.otf /usr/share/fonts/opentype/adobe/ && \
-    rm -rf source-sans && \
-    fc-cache -f -v
-RUN apt install -y \
-    texlive-base \
-    texlive-latex-extra \
-    texlive-fonts-extra \
-    texlive-fonts-recommended
-RUN pip install pelican==${PELICAN_VERSION}
-RUN pip install matplotlib==${MATPLOTLIB_VERSION}
+RUN pip install --no-cache pelican==${PELICAN_VERSION}
+RUN pip install --no-cache Markdown==3.2.1
+RUN pip install --no-cache matplotlib==${MATPLOTLIB_VERSION}
+
 WORKDIR /site
-RUN mkdir -p /site-generated
+
+RUN mkdir -p /site/content /site-generated
+
+COPY pelicanconf.py /site/
+
 ENTRYPOINT ["pelican", "-Dr", "-o", "/site-generated"]

pelicanconf.py

@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*- #
+PATH = '/site/content'