FROM node:20-alpine AS build

WORKDIR /app
COPY package*.json ./
# Fallback to npm install if no lockfile is present
RUN npm ci || npm install
COPY . .
# Ensure CSS variables are present
RUN mkdir -p public/styles
RUN cp -r styles/* public/styles/ || true
RUN npm run build

FROM node:20-alpine AS production

WORKDIR /app
RUN npm install -g serve
COPY --from=build /app/dist ./dist

EXPOSE 3000
# Serve static files (no SPA fallback), so /admin serves dist/admin/index.html
CMD ["serve", "-l", "3000", "dist"]

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -qO- http://localhost:3000/ || exit 1