Dockerfile

# Stage 1: Build
FROM node:18-alpine AS builder

# Set working directory inside the container
WORKDIR /app

# Copy package.json and package-lock.json (or yarn.lock) to install dependencies
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application files
COPY . .

# Build the Next.js app
RUN npm run build

# Stage 2: Production
FROM node:18-alpine AS production

# Set working directory
WORKDIR /app
ENV NODE_ENV production
# Install production dependencies only
COPY package*.json ./
RUN npm install --only=production

# Copy the build from the previous stage
COPY --from=builder /app/package*.json ./
COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/next.config.mjs ./

# Expose port 3000
EXPOSE 3000

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