Dockerfile

FROM node:18-alpine AS deps

WORKDIR /app

# Copy package files for dependency installation
COPY package.json package-lock.json .npmrc ./

# Install dependencies with specific npm configuration
RUN npm ci

# Build stage
FROM node:18-alpine AS builder

WORKDIR /app

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Build the application
RUN npm run build

# Production stage
FROM node:18-alpine AS runner

WORKDIR /app

# Set environment to production
ENV NODE_ENV=production

# Create a non-root user for security
RUN addgroup --system --gid 1001 nodejs \
    && adduser --system --uid 1001 nextjs

# Copy necessary files from builder
COPY --from=builder /app/next.config.cjs ./
COPY --from=builder /app/public ./public
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/package.json ./package.json

# Set proper permissions
RUN chown -R nextjs:nodejs /app

# Use the non-root user
USER nextjs

# Expose the port the app runs on
EXPOSE 3000

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

# Start the application
CMD ["npm", "run", "start"]