title: wget in docker prints thousands of lines to show progress instead of a single line progress bar
body: <p>When I <code>wget</code> a file, e.g. from GitHub, it shows a nice one-line progress bar like that:</p>
  <pre><code>wget -N http://db.sqlite.zip
  db.sqlite.zip   28%[====&gt;                       ]  68.79M   370KB/s    eta 5m 53s 
  </code></pre>
  <p>But I run the  <code>wget</code> command exactly the <strong>same</strong> way when starting up a container, as a bash script to get some data, it prints thousands of lines, apparently for each 50K bits which are downloaded:</p>
  <pre><code>app_1  |      0K .......... .......... .......... ..........  0%  212K 19m12s
  app_1  |     50K .......... .......... .......... ..........  0%  426K 14m22s
  app_1  |    100K .......... .......... .......... ..........  0% 38.4M 9m37s
  app_1  |    150K .......... .......... .......... ..........  0%  430K 9m35s
  app_1  |    200K .......... .......... .......... ..........  0% 33.9M 7m41s
  ...
  </code></pre>
  <p>+ many... many more of these lines (it actually fills the stdout buffer and I don't want to).</p>
  <p>How could I get the same behaviour, e.g. displaying a one-line progress bar, than on my host machine? If possible of course. Otherwise I simply <code>-q</code> it and that's over.</p>