title: execution of chown(container files) get hung
body: <p>I'm trying to run Zalenium docker on ubuntu 18.04. Below is my command.</p>
  
  <pre><code>curl -sSL https://raw.githubusercontent.com/dosel/t/i/p | bash -s start
  
  or
  
  docker run --rm -ti -p 4404:4444 -v /var/run/docker.sock:/var/run/docker.sock -v /home/emiteqa/eMite/videos:/home/seluser/videos --privileged dosel/zalenium start
  </code></pre>
  
  <p>I got stuck at "Copying files for Dashboard"</p>
  
  <pre><code>Docker binary already present, will use that one.
  Docker version 18.09.0, build 4d60db4
  -- LOG 07:33:35:233537096 Ensuring docker works...
  -- LOG 07:33:35:414698248 Ensuring docker-selenium is available...
  haveged: haveged starting up
  Copying files for Dashboard...
  </code></pre>
  
  <p>After investigate, I find the cause is the zalenium get hung at below line in <a href="https://github.com/zalando/zalenium/blob/master/scripts/zalenium.sh" rel="nofollow noreferrer">zalenium.sh</a></p>
  
  <pre><code>sudo chown -R ${HOST_UID}:${HOST_GID} /home/seluser
  </code></pre>
  
  <p>Then, I go into the zalenium container. I try to run sudo chown on any file in the container, it get stuck.</p>
  
  <pre><code>seluser@5ada56c01231:~$ ls -ltr
  total 40396
  -rwxrwxr-x 1 seluser root       41277 Nov 24 15:23 zalenium.sh
  -rwxrw-r-- 1 seluser root       15086 Nov 24 15:23 zalando.ico
  -rwxrwxr-x 1 seluser root         770 Nov 24 15:23 wait-testingbot.sh
  -rwxrwxr-x 1 seluser root         983 Nov 24 15:23 wait-saucelabs.sh
  -rwxrwxr-x 1 seluser root         933 Nov 24 15:23 wait-lambdatest.sh
  -rwxrwxr-x 1 seluser root         746 Nov 24 15:23 wait-cbt.sh
  -rwxrwxr-x 1 seluser root         831 Nov 24 15:23 wait-browserstack.sh
  -rwxrwxr-x 1 seluser root        1268 Nov 24 15:23 start-testingbot.sh
  -rwxrwxr-x 1 seluser root        2679 Nov 24 15:23 start-saucelabs.sh
  -rwxrwxr-x 1 seluser root        1061 Nov 24 15:23 start-lambdatest.sh
  -rwxrwxr-x 1 seluser root        1078 Nov 24 15:23 start-cbt.sh
  -rwxrwxr-x 1 seluser root        1287 Nov 24 15:23 start-browserstack.sh
  -rwxrw-r-- 1 seluser root        2699 Nov 24 15:23 logging_info.properties
  -rwxrw-r-- 1 seluser root        2738 Nov 24 15:23 logging_debug.properties
  -rwxrw-r-- 1 seluser root        1082 Nov 24 15:23 logback.xml
  -rwxrw-r-- 1 seluser root        2128 Nov 24 15:23 LICENSE.md
  -rwxrw-r-- 1 seluser root         637 Nov 24 15:23 error.html.bak
  -rwxrw-r-- 1 seluser root       10996 Nov 24 15:23 dashboard_template.html
  -rwxrw-r-- 1 seluser root        4529 Nov 24 15:23 Analytics.md
  -rw-rw-r-- 1 root    root    41184199 Nov 24 15:23 zalenium-3.141.59v.jar
  drwxrwxr-x 1 seluser root        4096 Nov 24 15:27 css
  drwxrwxr-x 1 seluser root        4096 Nov 24 15:27 js
  drwxrwxr-x 1 seluser root        4096 Nov 24 15:27 img
  drwxrwxr-x 5 seluser seluser     4096 Dec  5 01:56 videos
  -rwxrw-r-- 1 seluser seluser     3420 Dec  6 07:00 nginx.conf.bak
  -rwxrw-r-- 1 seluser seluser     3404 Dec  6 07:00 nginx.conf
  -rwxrw-r-- 1 seluser seluser      627 Dec  6 07:00 error.html
  drwxr-xr-x 2 seluser seluser     4096 Dec  6 07:00 logs
  -rw-r--r-- 1 seluser seluser     1181 Dec  6 07:00 docker_info.txt
  seluser@5ada56c01231:~$ pwd
  /home/seluser
  seluser@5ada56c01231:~$ sudo chown seluser:seluser wait-testingbot.sh
  
  ^C^C
  seluser@5ada56c01231:~$ ^C
  seluser@5ada56c01231:~$ sudo chown seluser:seluser wait-testingbot.sh
  seluser@5ada56c01231:~$ sudo chown seluser:seluser wait-saucelabs.sh
  ^C^C
  seluser@5ada56c01231:~$ sudo chown seluser:seluser wait-saucelabs.sh
  seluser@5ada56c01231:~$
  </code></pre>
  
  <p>What I have tried</p>
  
  <ul>
  <li>If I touch a new file and run sudo chown, there is no problem.</li>
  <li>If I CTRL+C and retry, it will pass.</li>
  <li>By using exact same steps starting from docker installation, I can run zalenium successfully on aws
  server.</li>
  <li>I googled, but didn't find any similar issue. I know it's possibly due to env issue, but I have no clue how to troubleshoot.</li>
  </ul>
  
  <p>Thanks in advance for any suggestion and help.</p>