lighten the Docker image

Dockerfile

@@ -1,10 +1,24 @@
-FROM tiangolo/uvicorn-gunicorn:python3.11
+FROM python:3.11-slim
 
 COPY ./requirements.txt /tmp/requirements.txt
 COPY ./entrypoint.sh /tmp/entrypoint.sh
 COPY ./src /app/src
 COPY ./tests /app/tests
 
+RUN chmod +x /tmp/entrypoint.sh
+
+# Avoid interactive prompts during package installation
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install gcc and curl for building and downloading packages
+# Use --no-install-recommends to avoid installing unnecessary packages
+# Clean up apt cache to reduce image size
+# Use pip to install Python packages
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends gcc curl && \
+    pip install --upgrade pip && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
+
 RUN pip install --no-cache-dir -r /tmp/requirements.txt
 
 WORKDIR /app
@@ -16,7 +30,7 @@ EXPOSE 8860
 
 # Health Check
 HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
-  CMD [ "curl", "-f", "http://localhost:8860/check_health" ]
+CMD [ "curl", "-f", "http://localhost:8860/check_health" ]
 
 # Create a non-root user 'appuser' and switch to this user
 RUN useradd --create-home appuser

requirements.txt

@@ -3,5 +3,4 @@ fastapi
 sqlalchemy
 psycopg[binary]
 pytest
-appengine-python-standard>=1.0.0
 uvicorn