Refactor: Use slim variant of Python image and optimize package installation in Dockerfile

Author: jeroenvdmeer

Dockerfile

@@ -1,11 +1,13 @@
-FROM python:3.13
+FROM python:3.13-slim
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 ENV PYTHONPATH=/app
 WORKDIR /app
 COPY requirements.txt .
 RUN apt-get update &&\
-    apt-get install -y swig &&\
+    apt-get install -y --no-install-recommends swig &&\
+    apt-get upgrade -y &&\
+    rm -rf /var/lib/apt/lists/* &&\
     pip install --no-cache-dir -r requirements.txt
 COPY . /app/
 EXPOSE 8000