# syntax=docker/dockerfile:1.7

# ---- Stage 1: Build ----
FROM node:20-alpine AS builder

WORKDIR /app

# Copy manifests first for cache efficiency
COPY package.json package-lock.json ./
RUN npm ci

# Copy source and build
COPY . .
RUN npm run build

# ---- Stage 2: Runtime ----
FROM nginx:alpine

# Replace default config with SPA-aware one
COPY nginx.conf /etc/nginx/conf.d/default.conf

# Copy built static assets
COPY --from=builder /app/dist /usr/share/nginx/html

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

EXPOSE 80