anchor.diff:  # Install compiler toolchain and libraries.
   RUN apk add --no-cache build-base libffi-dev libressl-dev
   
  -# Install/upgrade pip and virtualenv
  -RUN pip install --upgrade pip virtualenv
  +# Install/upgrade pip
  +RUN python -m pip install --upgrade pip
   
   # Paths
   ENV IMS_SOURCE_DIR="/src/ims"
  
positive.code: WORKDIR /tmp
  RUN install -o daemon -g daemon -d "${IMS_INSTALL_DIR}"
  USER daemon:daemon
  RUN virtualenv "${IMS_INSTALL_DIR}"
  RUN "${IMS_INSTALL_DIR}/bin/pip" --no-cache-dir install "${IMS_SOURCE_DIR}"
  
  
  
negative.code: 
  # Allow ims_server to bind to privileged port numbers
  RUN apk add --no-cache libcap
  RUN setcap "cap_net_bind_service=+ep" /usr/local/bin/python3.7
  
  # Configuration
  ENV IMS_HOSTNAME="0.0.0.0"
  