- Install curl for HEALTHCHECK support - Add HEALTHCHECK instruction using /health endpoint - Improve layer caching by copying package.json before app code - Add helpful comments for better maintainability - Health check runs every 10s with 5s start period and 2 retries 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
21 lines
431 B
Docker
21 lines
431 B
Docker
FROM node:18-alpine
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WORKDIR /app
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# Install curl for healthcheck
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RUN apk add --no-cache curl
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# Copy package files first for layer caching
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COPY package*.json ./
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RUN npm install --production
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# Copy app code (changes more often — below the cached layer)
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COPY . .
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EXPOSE 3000
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HEALTHCHECK --interval=10s --timeout=3s --start-period=5s --retries=2 \
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CMD curl -f http://localhost:3000/health || exit 1
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CMD ["node", "server.js"]
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