FROM node:22-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm ci --silent
COPY . .
RUN npm run build

FROM nginx:alpine
COPY --from=build /app/dist /usr/share/nginx/html
# nginx official image runs envsubst on /etc/nginx/templates/*.template → /etc/nginx/conf.d/
COPY nginx.conf.template /etc/nginx/templates/default.conf.template
EXPOSE 80