Remove libc-dev and uninstall py (#392)

backend/Dockerfile

@@ -10,11 +10,16 @@ COPY ./requirements/default.txt /tmp/requirements.txt
 RUN pip install --no-cache-dir --upgrade -r /tmp/requirements.txt
 
 # Remove py which is pulled in by retry, py is not needed and is a CVE
-RUN pip uninstall py
+RUN pip uninstall -y py
 
 RUN playwright install chromium
 RUN playwright install-deps chromium
 
+# Cleanup for CVEs and size reduction
+RUN apt-get remove -y linux-libc-dev \
+    && apt-get autoremove -y \
+    && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /app
 COPY ./danswer /app/danswer
 COPY ./alembic /app/alembic