Dockerfile

# Build stage
FROM node:26-alpine AS builder

WORKDIR /app

# Copy package files
COPY package.json package-lock.json* ./

# Install all dependencies (including dev)
# Use npm install to generate lock file, or npm ci if lock file exists
RUN npm install

# Copy source files
COPY tsconfig.json ./
COPY src/ ./src/

# Build TypeScript
RUN npm run build

# Test stage
FROM builder AS test

# Copy test files
COPY vitest.config.ts ./
COPY tests/ ./tests/

# Run tests
CMD ["npm", "run", "test"]

# Production stage
FROM node:26-alpine AS production

# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

WORKDIR /app

# Copy package files
COPY package.json package-lock.json* ./

# Install production dependencies only
RUN npm install --omit=dev && npm cache clean --force

# Copy built files from builder
COPY --from=builder /app/dist ./dist

# Set ownership to non-root user
RUN chown -R nodejs:nodejs /app

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:3000/health || exit 1

# Start server
CMD ["node", "dist/index.js"]