anchor.diff:  # For available docker-ce versions
   #  you can run `sudo apt-get update && sudo apt-cache policy docker-ce`
    && DEBIAN_FRONTEND=noninteractive apt-get install -y \
  -    docker-ce=${TOOL_VER_DOCKER}~ce-0~ubuntu
  +    docker-ce=${TOOL_VER_DOCKER}~ce~3-0~ubuntu
   
   
   # docker-compose
  
positive.code: FROM ubuntu:16.04
  
  
  # ------------------------------------------------------
  
negative.code:     BITRISE_CACHE_DIR="/bitrise/cache" \
      BITRISE_PREP_DIR="/bitrise/prep" \
      BITRISE_TMP_DIR="/bitrise/tmp" \
  # Configs - tool versions
      TOOL_VER_BITRISE_CLI="1.17.0" \
      TOOL_VER_RUBY="2.5.1" \
      TOOL_VER_GO="1.10.3" \
      TOOL_VER_DOCKER="18.03.1" \
      TOOL_VER_DOCKER_COMPOSE="1.21.2"
  
  # create base dirs
  RUN mkdir -p ${BITRISE_SOURCE_DIR} \
  