anchor.diff:   && ln -sf ~/theme.zsh-theme /var/lib/oh-my-zsh/home.zsh-theme
   
   ENV USER="user" \
  -	EDITOR="vim" \
  -	TIMEZONE="UTC"
  +    EDITOR="vim" \
  +    TIMEZONE="UTC"
   
   EXPOSE 22
   
  
positive.code: RUN git_version=$(git --version | sed -rn "s/.*(\d+\.\d+\.\d+).*/\1/p") \
   && cd /tmp \
   && curl \
  		--location \
  		--url https://github.com/git/git/archive/v$git_version.zip \
  		--output git.zip \
   && unzip -d git git.zip \
   && mkdir -p /usr/share/perl5/site_perl \
   && mv git/$(ls git)/perl/* /usr/share/perl5/site_perl/ \
  
negative.code: RUN latest="$(curl --url https://github.com/docker/machine/releases/latest | sed -rn 's/.*tag\/([^\"]*).*/\1/p')" \
   && echo "latest: $latest" \
   && curl \
          --location \
          --url https://github.com/docker/machine/releases/download/$latest/docker-machine-$(uname -s)-$(uname -m) \
          --output /usr/bin/docker-machine \
   && chmod +x /usr/bin/docker-machine \
   && [ $(stat -c %s /usr/bin/docker-machine) -gt 500 ] || exit 1
  
  ENV ETCD_VERSION="2.3.7"
  RUN cd /tmp \
   && curl \
          --location \
          --url https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz \
          --output etcd.tar.gz \
   && tar xvzf etcd.tar.gz \
   && mv etcd-v${ETCD_VERSION}-linux-amd64/etcd /usr/bin/ \
   && mv etcd-v${ETCD_VERSION}-linux-amd64/etcdctl /usr/bin/ \
  