Add Dockerfile for Hugging Face deployment

Dockerfile

@@ -0,0 +1,21 @@
+# Use Node.js 20 base image
+FROM node:20
+
+# Create and change to the app directory
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json first for caching
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the application code
+COPY . .
+
+# Expose the port (Render/HuggingFace use this for keep-alive)
+EXPOSE 7860
+ENV PORT=7860
+
+# Start the bot
+CMD [ "npm", "start" ]