anchor.diff:  ARG venv=venv
   
   RUN echo "To invalidate cache"
  +
  +
  + RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CE7709D068DB5E88
  + RUN add-apt-repository "deb https://repo.sovrin.org/ursa/deb xenial master"
   
   RUN apt-get update -y && apt-get install -y \
       python3-nacl \
  
positive.code: 
  WORKDIR /home/
  
  RUN git clone https://github.com/hyperledger/ursa.git
  
  WORKDIR /home/ursa/
  
  RUN  cargo build --release
  
  RUN cp /home/ursa/target/release/libursa.so /usr/lib/.
  
  RUN indy_ci_add_user $uid $user $venv
  
  RUN indy_image_clean
  
  USER $user
  WORKDIR /home/$user
  
negative.code:     zlib1g-dev \
      liblz4-dev \
      libsnappy-dev \
      ursa \
      rocksdb=5.8.8
  
  
  
  RUN curl -fsSL https://github.com/jedisct1/libsodium/releases/download/1.0.14/libsodium-1.0.14.tar.gz | tar -xz
  
  