frontend.Dockerfile

# FROM node:22-alpine

# # ENV NODE_ENV=production
# ENV PORT=3000
# ENV NEXT_TELEMETRY_DISABLED=1
# ENV BACKEND_URL='http://backend:5000'

# WORKDIR /app

# COPY ./frontend/ ./

# RUN npm install
# RUN npm run build

# # CMD ["sh", "-c", "sleep 20 && npm run build && npm run start -- -p ${PORT}"]
# CMD ["sh", "-c", "npm run start -- -p ${PORT}"]

# multistage dockerfile:
# stage 1: builder
FROM node:22-alpine AS builder
ENV BACKEND_URL='http://backend:5000'

WORKDIR /app

COPY ./frontend/ ./

RUN npm install
RUN npm run build


# stage 2: runner
FROM node:22-alpine AS runner
ENV NODE_ENV='production'
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV BACKEND_URL='http://backend:5000'

WORKDIR /app

COPY --from=builder /app/.next ./.next
COPY --from=builder /app/public ./public
COPY --from=builder /app/package.json ./
COPY --from=builder /app/node_modules ./node_modules

# RUN npm install --omit=dev
RUN npm prune --production

CMD ["npm", "run", "start", "-- -p $PORT"]