FROM node:20-alpine AS dev
WORKDIR /app/backend
COPY package*.json ./
RUN npm install
COPY . .
CMD ["npm", "run", "dev"]

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

FROM node:20-alpine AS prod
WORKDIR /app/backend
COPY package*.json ./
RUN npm install --omit=dev
COPY --from=build /app/backend/dist ./dist
EXPOSE 8080
CMD ["node", "dist/server.js"]