# syntax = docker/dockerfile:1 # Adjust NODE_VERSION as desired ARG NODE_VERSION=16.20.0 FROM node:${NODE_VERSION}-slim as base LABEL fly_launch_runtime="Node.js" # Node.js app lives here WORKDIR /app # Set production environment ENV NODE_ENV=production # Throw-away build stage to reduce size of final image FROM base as build # Install packages needed to build node modules RUN apt-get update -qq && \ apt-get install -y python pkg-config build-essential # Install node modules COPY --link package.json package-lock.json ./ RUN npm ci --include=dev # Copy application code COPY --link . . # Remove development dependencies RUN npm prune --omit=dev # Final stage for app image FROM base # Copy built application COPY --from=build /app /app # Start the server by default, this can be overwritten at runtime EXPOSE 3000 CMD [ "npm", "run", "start" ]