feat: update Dockerfile to use Debian slim and implement Python virtual environment for dependency management

Dockerfile

@@ -1,8 +1,16 @@
-FROM python:3.13.1-slim-bookworm
+FROM debian:bookworm-slim
 
-# Install dependencies
+# Install Python
+RUN apt-get update && apt-get install -y python3 python3-pip python3-venv
+
+# Install dependencies with venv
+# Create and activate a virtual environment
+RUN python3 -m venv /app/venv
+ENV PATH="/app/venv/bin:$PATH"
+
+# Install dependencies with venv
 COPY requirements.txt /app/requirements.txt
-RUN pip install --no-cache-dir -r /app/requirements.txt
+RUN /app/venv/bin/pip install --no-cache-dir -r /app/requirements.txt
 
 # Install curl
 RUN apt-get update && apt-get install -y curl
@@ -13,7 +21,7 @@ COPY utils/ /app/utils
 WORKDIR /app
 
 # Run the application
-CMD ["python", "main.py"]
+CMD ["/app/venv/bin/python", "main.py"]
 
 # Healthcheck
-HEALTHCHECK --interval=5s --timeout=10s --retries=5 CMD curl -f http://localhost/heartbeat || exit 1
+HEALTHCHECK --interval=5s --timeout=10s --retries=5 CMD curl -f http://localhost/healthcheck || exit 1