# --- Etap 1: budowa panelu ---------------------------------------------------
FROM node:22-alpine AS build

WORKDIR /app

# Zależności instalujemy przed skopiowaniem źródeł, aby korzystać z cache warstw.
COPY package.json package-lock.json ./
RUN npm ci

COPY . .
RUN npm run build

# --- Etap 2: serwowanie przez nginx ------------------------------------------
FROM nginx:1.27-alpine

COPY nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=build /app/dist /usr/share/nginx/html

EXPOSE 80

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