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

# Set working directory inside the container
WORKDIR /app

# Copy package.json and package-lock.json first to leverage Docker cache
COPY package.json package-lock.json ./

# Install dependencies
RUN npm install -force

# Copy the rest of the application files
COPY . .

# Build the Next.js application
RUN npm run build

# ---- Production Stage ----
FROM node:18-alpine AS runner

# Set working directory inside the container
WORKDIR /app

# Copy only necessary files from builder
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

# Expose port for Next.js
EXPOSE 3000

# Set environment variable to indicate production mode
ENV NODE_ENV=production

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