dockerfile

# Use official Node.js image as a base
FROM node:18-alpine AS builder

# Set working directory
WORKDIR /app

# Copy package.json and package-lock.json
COPY package.json package-lock.json ./

# Install dependencies
RUN npm ci

# Copy the rest of the application
COPY . .

# Build the Next.js application
RUN npm run build

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

# Use a lightweight image for production
FROM node:18-alpine AS runner

# Set working directory
WORKDIR /app

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

# Set environment variable to production
ENV NODE_ENV=production

# Expose the Next.js default port
EXPOSE 3000

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