# Build stage — needs all dependencies including devDependencies
FROM node:22-alpine AS build

WORKDIR /app

COPY package*.json ./
RUN npm ci

COPY . .
RUN npm run build

# Production stage — only production dependencies
FROM node:22-alpine

WORKDIR /app

RUN addgroup -S appgroup && adduser -S appuser -G appgroup && \
    chown -R appuser:appgroup /app

# Install only production deps in the final image
COPY --chown=appuser:appgroup package*.json ./
RUN npm ci --only=production

# Copy built assets from build stage
COPY --from=build --chown=appuser:appgroup /app/.next ./.next
COPY --from=build --chown=appuser:appgroup /app/public ./public
COPY --from=build --chown=appuser:appgroup /app/next.config.js ./next.config.js

ENV NODE_ENV=production

USER appuser

EXPOSE 3000

CMD ["npm", "start"]