anchor.diff:  RUN apk add --no-cache \
           bash \
           ca-certificates \
  +        openjdk11-jre-headless \
           tzdata \
           tini \
           xmlstarlet \
  
positive.code: FROM openjdk:8u212-jre-alpine3.9 as builder
  
  ARG VERSION=7.12.0
  ARG DISTRO=tomcat
  
negative.code: 
  ##### FINAL IMAGE #####
  
  FROM alpine:3.10
  
  ARG VERSION=7.12.0
  
  