Dockerfile

# Stage 1: Build the application
FROM node:22-alpine AS builder

WORKDIR /app

# Copy package files and install dependencies
COPY package*.json ./
RUN npm ci

# Copy application source
COPY . .

# Build the application
RUN npm run build

# Stage 2: Run the application
FROM node:22-alpine AS production

WORKDIR /app

# Set to production environment
ENV NODE_ENV=production

# Copy only the necessary files from the builder stage
COPY --from=builder /app/build ./build
COPY --from=builder /app/package.json ./package.json
COPY --from=builder /app/package-lock.json ./package-lock.json

# Install only production dependencies
RUN npm ci --omit=dev

# Create a non-root user and switch to it
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001 -G nodejs
USER nodejs

# Expose the port the app will run on
EXPOSE 3000

# Define the command to run the application
CMD ["node", "build/index.js"]