title: Docker build fails with "RUN: command not found"
body: <p>I am running below contents in dockerfile it runs until yum installation and fails as, /bin/sh: RUN: command not found</p>
  
  <p>DockerFile:</p>
  
  <pre><code>FROM amazonlinux:latest
  ADD . /tmp/
  RUN yum install gzip -y &amp;&amp; \
      yum install tar -y &amp;&amp; \
      yum install libstdc++.so.6 -y &amp;&amp; \
  RUN cd /tmp &amp;&amp; /usr/bin/gunzip TeradataToolsAndUtilitiesBase__linux_indep.16.20.10.00.tar.gz &amp;&amp; /usr/bin/tar -xvf TeradataToolsAndUtilitiesBase__linux_indep.16.20.10.00.tar 
  RUN cd /tmp/TeradataToolsAndUtilitiesBase/ &amp;&amp; ./setup.bat a
  CMD ["/bin/bash"]
  </code></pre>
  
  <p>Error: </p>
  
  <pre><code>Installed:
    libstdc++.i686 0:7.3.1-5.amzn2.0.2                                            
  
  Dependency Installed:
    glibc.i686 0:2.26-32.amzn2.0.1         libgcc.i686 0:7.3.1-5.amzn2.0.2        
  
  Complete!
  /bin/sh: RUN: command not found
  The command '/bin/sh -c yum install gzip -y &amp;&amp;     yum install tar -y &amp;&amp;     yum install libstdc++.so.6 -y &amp;&amp; RUN cd /tmp &amp;&amp; /usr/bin/gunzip TeradataToolsAndUtilitiesBase__linux_indep.16.20.10.00.tar.gz &amp;&amp; /usr/bin/tar -xvf TeradataToolsAndUtilitiesBase__linux_indep.16.20.10.00.tar' returned a non-zero code: 127
  system:ttudockerimg$
  </code></pre>
  
  <p>Please help. </p>