# ---- Build stage ----
FROM node:22-alpine AS build
WORKDIR /app

# Install dependencies against the lockfile for reproducible builds
COPY package.json package-lock.json ./
RUN npm ci

# Build the static site (tsc -b && vite build -> /app/dist)
COPY . .
RUN npm run build

# ---- Serve stage ----
FROM nginx:1.27-alpine AS runtime

# SPA-aware nginx config (history fallback + asset caching)
COPY nginx.conf /etc/nginx/conf.d/default.conf

# Static output from the build stage
COPY --from=build /app/dist /usr/share/nginx/html

EXPOSE 80
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -qO- http://localhost/ >/dev/null 2>&1 || exit 1

CMD ["nginx", "-g", "daemon off;"]