FROM node:20-alpine

WORKDIR /app

# Next.js standalone runtime. Required because the contact form's Server
# Action (sendEmail.ts, SMTP via nodemailer) needs a live Node process -
# it cannot run under static/nginx serving.
ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

# Copy the standalone build artifact (server.js, .next/, public/)
COPY build /app

EXPOSE 3000

CMD ["node", "server.js"]