Dockerfile

# Stage 1: Build
FROM node:20-alpine AS builder

# Set the working directory inside the container
WORKDIR /app

# Copy package.json and package-lock.json to the working directory
COPY package.json package-lock.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application code to the working directory
COPY . .

# Build the application
RUN npm run build

# Stage 2: Production
FROM node:20-alpine

# Set the working directory inside the container
WORKDIR /app

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

# Set NODE_ENV to production
ENV NODE_ENV=production

# Install only production dependencies
RUN npm install --only=production

# Expose the port the app runs on
EXPOSE 3000

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