Dockerfile

# base node image
FROM node:20-bookworm-slim as base

# set for base and all layer that inherit from it
ENV NODE_ENV production
ENV PORT 8080

# Install all node_modules, including dev dependencies
FROM base as deps

WORKDIR /app

ADD package.json package-lock.json ./
RUN npm install --include=dev

# Setup production node_modules
FROM base as production-deps

WORKDIR /app

COPY --from=deps /app/node_modules /app/node_modules
ADD package.json package-lock.json ./
RUN npm prune --omit=dev

# Build the app
FROM base as build

WORKDIR /app

COPY --from=deps /app/node_modules /app/node_modules

ADD . .
RUN npm run build

# Finally, build the production image with minimal footprint
FROM base

WORKDIR /app

# You only need these for production
COPY --from=production-deps /app/node_modules /app/node_modules
COPY --from=build /app/build /app/build
COPY --from=build /app/package.json /app/package.json

CMD [ "npm", "run", "start" ]