# ---- Build stage ----
FROM node:20-alpine AS builder

WORKDIR /app

# install deps first (better caching)
COPY package.json package-lock.json ./
RUN npm ci

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


# ---- Production stage ----
FROM nginx:alpine

# remove default nginx static files
RUN rm -rf /usr/share/nginx/html/*

# copy built app
COPY --from=builder /app/dist /usr/share/nginx/html

# optional: custom nginx config (for SPA routing)
# COPY nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

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