Update python image

Author: Robinlovelace

python/Dockerfile

@@ -1,14 +1,21 @@
-FROM python:3.13-slim-bookworm
-# Install wget and unzip:
+FROM python:3.12-slim-bookworm
+
+# Install wget, unzip, git, and build tools (needed for compiling packages like matplotlib)
 RUN apt update && apt install -y \
     wget \
     unzip \
     git \
+    build-essential \
     && rm -rf /var/lib/apt/lists/*
+
 # Install quarto
 RUN wget https://github.com/quarto-dev/quarto-cli/releases/download/v1.5.57/quarto-1.5.57-linux-amd64.deb
 RUN dpkg -i quarto*
 RUN rm quarto*
+
 # Install requirements
 RUN wget https://raw.githubusercontent.com/geocompx/py/main/requirements.txt
 RUN pip install -r requirements.txt
+
+# Clean up build tools to reduce image size (optional but recommended)
+RUN apt purge -y build-essential && apt autoremove -y && rm -rf /var/lib/apt/lists/*