Update Dockerfile

Dockerfile

@@ -6,20 +6,28 @@ WORKDIR /app
 
 # Set environment variables
 ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
+    PYTHONUNBUFFERED=1 \
+    PORT=8080
 
-# Install dependencies
+# Install dependencies first for better layer caching
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy project files
 COPY . .
 
-# Create the templates directory if not existing
+# Make sure templates directory exists
 RUN mkdir -p templates
 
-# Make port available to the world outside this container
+# Create data directory if it doesn't exist
+RUN mkdir -p /data && chmod 777 /data
+
+# Make port 8080 available to the world outside this container
 EXPOSE 8080
 
+# Define health check
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD curl -f http://localhost:8080/health || exit 1
+
 # Run the application when the container launches
-CMD ["python", "app.py"]
+CMD ["python", "app.py"]