title: Jenkins not recognizing composer command
body: <p>I have a local install of JenkinsCI.  Installed via instructions in the Chapter 2 of <em>Jenkins The Definitive Guide</em>.  I start Jenkins via Java Web Start/JNLP file on my MAC running El Capitan.  All that went great, sample project is working.</p>
  
  <p>I know want to get my Codeception Acceptance test running via Jenkins.  I'm following the most recent blog post about this on the Codeception site: <a href="http://codeception.com/02-04-2015/setting-up-jenkins-with-codeception.html#.VwWxE2PLRAZ" rel="noreferrer">http://codeception.com/02-04-2015/setting-up-jenkins-with-codeception.html#.VwWxE2PLRAZ</a>.  </p>
  
  <p>Using the Execute shell build step, my build fails with the following message: </p>
  
  <blockquote>
    <p>Started by user anonymous </p>
    
    <p>Building in workspace /Users/Cosette/.jenkins/workspace/Project Name</p>
    
    <p>[Project Name] $ /bin/sh -xe
    /var/folders/ns/ly6hv_513tl6qqslrb2vj_dw0000gn/T/hudson9210778078639547082.sh</p>
    
    <ul>
    <li>composer install </li>
    </ul>
    
    <p>/var/folders/ns/ly6hv_513tl6qqslrb2vj_dw0000gn/T/hudson9210778078639547082.sh:
    line 2: composer: command not found </p>
    
    <p>Build step 'Execute shell' marked build as failure </p>
    
    <p>Finished: FAILURE</p>
  </blockquote>
  
  <p>My guess is that maybe this install type doesn't install the Jenkins user?  Please note I am very beginner level and this is my first question here on stackoverflow.  Also, That should be a + sign in front of "composer install".  </p>