atform &#39;</span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_platform'>platform</span><span class='embexpr_end'>}</span><span class='tstring_content'>&#39;</span><span class='tstring_end'>&quot;</span></span>
      <span class='id identifier rubyid_command'>command</span> <span class='op'>=</span> <span class='tstring'><span class='tstring_beg'>%{</span><span class='tstring_content'>docker build </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_docker_qui