anchor.diff:      FLASK_APP=/build/powerdnsadmin/__init__.py
   
   # Get dependencies
  -RUN apk add --no-cache ${BUILD_DEPENDENCIES} && \
  -    ln -s /usr/bin/pip3 /usr/bin/pip
  +RUN apk add --no-cache ${BUILD_DEPENDENCIES}
   
   WORKDIR /build
   
  
positive.code: 
  
  # Build image
  FROM alpine:3.11
  
  ENV FLASK_APP=/app/powerdnsadmin/__init__.py
  
  
negative.code: FROM alpine:3.12 AS builder
  LABEL maintainer="k@ndk.name"
  
  ARG BUILD_DEPENDENCIES="build-base \
  