Update Dockerfile

Dockerfile

@@ -1,23 +1,33 @@
 FROM node:20-slim
 
-# Install system deps
+# Install curl for health checks
 RUN apt-get update && apt-get install -y \
     curl \
-    procps \
-    zstd \
-    && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/* \
+    && apt-get clean
 
-# Set working directory
 WORKDIR /app
 
-# Copy project files
-COPY . .
+# Copy package files
+COPY package*.json ./
 
-# Install dependencies (if package.json exists)
-RUN npm install --legacy-peer-deps || true
+# Install Node dependencies
+RUN npm ci --only=production && npm cache clean --force
+
+# Copy source
+COPY cpu.js .
+
+# Create non-root user
+RUN addgroup --gid 1001 --system node && \
+    adduser --uid 1001 --system --gid 1001 node && \
+    chown -R node:node /app
+
+USER node
 
-# Expose port
 EXPOSE 7860
 
-# Auto run index.js
-CMD ["node", "index.js"]
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:7860/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) }).on('error', () => process.exit(1))"
+
+CMD ["node", "cpu.js"]