# Build stage - alle Abhaengigkeiten, Frontend-Bundles bauen.
FROM node:22-alpine AS build
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci
COPY build.js ./
COPY src ./src
COPY public ./public
RUN npm run build

# Production stage - nur Runtime-Abhaengigkeiten und fertige Assets.
FROM node:22-alpine
WORKDIR /app
ENV NODE_ENV=production
COPY package.json package-lock.json ./
RUN npm ci --omit=dev && npm cache clean --force
COPY server.js ./
COPY --from=build /app/public ./public
USER node
# Dokumentiert den internen Port, oeffnet nichts.
EXPOSE 3000
CMD ["node", "server.js"]