anchor.diff:  WORKDIR /app
   COPY --from=builder /opt/built .
   
  -CMD ["./bin/bowser", "foreground"]
  +CMD ["./bin/${APP_NAME}", "foreground"]
  
positive.code: 
  
  
  FROM alpine:3.10@sha256:acd3ca9941a85e8ed16515bfc5328e4e2f8c128caa72959a58a127b7801ee01f
  
  RUN apk --no-cache add \
      bash \
  
negative.code: ARG APP_NAME=bowser
  
  FROM elixir:1.9-alpine@sha256:cdf3e9e7ea3c076b3780a0963c16f0e7cb6f8abe6c8e160618e73049ac61585e as builder
  
  ARG APP_NAME
  ARG COOKIE
  ARG MIX_ENV=prod
  
  