title: Cannot install inside docker container
body: <p>I'm quite new at docker, but I'm facing a problem I have no idea how to solve it.</p>
  
  <p>I have a jenkins (docker) image running and everything was fine. A few days ago I created a job so I can run my nodejs tests every time a pull request is made. one of the job's build steps is to run <code>npm install</code>. And the job is constantly failing with this error:</p>
  
  <p><code>tar (child): bzip2: Cannot exec: No such file or directory</code></p>
  
  <p>So, I know that I have to install <code>bzip2</code> inside the jenkins container, but how do I do that? I've already tried to run <code>docker run jenkins bash -c "sudo apt-get bzip2"</code> but I got: <code>bash: sudo: command not found</code>.</p>
  
  <p>With that said, how can I do that?</p>
  
  <p>Thanks in advance.</p>