feat: add health check and heartbeat endpoint to Docker setup

Dockerfile

@@ -4,6 +4,9 @@ FROM python:3.13.1-slim-bookworm
 COPY requirements.txt /app/requirements.txt
 RUN pip install --no-cache-dir -r /app/requirements.txt
 
+# Install curl
+RUN apt-get update && apt-get install -y curl
+
 # Copy the application
 COPY main.py /app
 COPY utils/ /app/utils
@@ -11,3 +14,6 @@ WORKDIR /app
 
 # Run the application
 CMD ["python", "main.py"]
+
+# Healthcheck
+HEALTHCHECK --interval=5s --timeout=10s --retries=5 CMD curl -f http://localhost/heartbeat || exit 1

utils/PostHandler.py

@@ -24,6 +24,11 @@ class Handler(BaseHTTPRequestHandler):
             self.wfile.write(b'404 Not Found')
             
     def do_GET(self):
-        self.send_response(404)
-        self.end_headers()
-        self.wfile.write(b'404 Not Found')
+        if self.path == '/heartbeat':
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(b'Heartbeat OK')
+        else:
+            self.send_response(404)
+            self.end_headers()
+            self.wfile.write(b'404 Not Found')