FROM node:20-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
RUN npm run build

FROM nginx:alpine
COPY --from=build /app/dist /usr/share/nginx/html
# SPA fallback: all paths → index.html
RUN printf 'server {\n  listen 80;\n  root /usr/share/nginx/html;\n  location / { try_files $uri $uri/ /index.html; }\n  location /api/ { proxy_pass http://backend:8000/; }\n}\n' > /etc/nginx/conf.d/default.conf
EXPOSE 80