anchor.diff: -# Stage: base image
  +
  +FROM node:16.14-bullseye-slim as base
  +
   ARG BUILD_NUMBER=1_0_0
   ARG GIT_REF=not-available
  -
  -FROM node:16.14-bullseye-slim as base
   
   LABEL maintainer="HMPPS Digital Studio <info@digital.justice.gov.uk>"
   
  
positive.code: 
  # Stage: build assets
  FROM base as build
  ARG BUILD_NUMBER
  ARG GIT_REF
  
  RUN apt-get update && \
      apt-get install -y make python g++ git
  
negative.code: COPY . .
  RUN npm run build
  
  RUN export BUILD_NUMBER=${BUILD_NUMBER} && \
          export GIT_REF=${GIT_REF} && \
          npm run record-build-info
  
  RUN npm prune --no-audit --production
  
  