Dockerfile.frontend

FROM node:22-alpine AS base

# Install dependencies only when needed
FROM base AS deps
# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Copy package.json and package-lock.json
COPY docent_core/_web/package*.json ./

# Install dependencies (including dev dependencies for build stage)
RUN npm ci --legacy-peer-deps

# Rebuild the source code only when needed
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY docent_core/_web ./

# Set build argument for API host (used by production builds)
ARG NEXT_PUBLIC_API_HOST
ENV NEXT_PUBLIC_API_HOST=${NEXT_PUBLIC_API_HOST}

# Build the application
RUN npm run build

# Production image, copy all the artifacts and run next
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
# Disable telemetry during build
ENV NEXT_TELEMETRY_DISABLED=1

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# Copy built application
COPY --from=builder /app/public ./public

# Set the correct permission for prerender cache
RUN mkdir .next
RUN chown nextjs:nodejs .next

# Automatically leverage output traces to reduce image size
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Start the application using pure Node.js standalone server
CMD ["node", "server.js"]