anchor.diff:  ARG IMAGE_TAG=latest
   
   FROM buildpack-deps:18.04 as build_base
  -
  -ARG GALAXY_RELEASE=release_20.05
  -ARG GALAXY_REPO=https://github.com/galaxyproject/galaxy
   
   ENV EXPORT_DIR=/export \
       GALAXY_ROOT=/galaxy \
  
positive.code:     GALAXY_PYTHON=/usr/bin/python3 \
      HTCONDOR_ROOT=/opt/htcondor
  
  ENV GALAXY_RELEASE=${GALAXY_RELEASE:-release_20.05} \
      GALAXY_REPO=${GALAXY_REPO:-https://github.com/galaxyproject/galaxy} \
      GALAXY_STATIC_DIR=$GALAXY_ROOT/static \
      GALAXY_EXPORT=$EXPORT_DIR/galaxy \
      GALAXY_CONFIG_DIR=$GALAXY_ROOT/config \
      GALAXY_CONFIG_TOOL_DEPENDENCY_DIR=/tool_deps \
  
negative.code: # --- Final image ---
  FROM $DOCKER_REGISTRY/$DOCKER_REGISTRY_USERNAME/galaxy-cluster-base:$IMAGE_TAG as final
  
  ARG GALAXY_RELEASE=release_20.05
  ARG GALAXY_REPO=https://github.com/galaxyproject/galaxy
  
  COPY ./files/common_cleanup.sh /usr/bin/common_cleanup.sh
  COPY ./files/create_galaxy_user.py /usr/local/bin/create_galaxy_user.py
  
  