etf-trade-tracker/Dockerfile

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Docker
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# Use official Node.js runtime as base image
FROM node:18-alpine
# Set working directory in container
WORKDIR /app
# Copy package files first for better layer caching
COPY package*.json ./
# Install dependencies
RUN npm ci --only=production
# Copy application files
COPY . .
# Create directory for SQLite database
RUN mkdir -p /app/data
# Create non-root user for security
RUN addgroup -g 1001 -S nodejs
RUN adduser -S nodejs -u 1001
# Change ownership of app directory to nodejs user
RUN chown -R nodejs:nodejs /app
USER nodejs
# Expose port 3000
EXPOSE 3000
# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
CMD node -e "const http = require('http'); http.get('http://localhost:3000/', (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }).on('error', () => { process.exit(1); });"
# Start the application
CMD ["npm", "start"]