title: Permission denied inside docker container for buildozer
body: <p>I am using docker container for packaging kivy for android. Getting below error. Any pointers is appreciated.
  My local system is MacOS.
  python 2.7.15</p>
  
  <pre><code>saurabhs-MacBook-Pro:~ saurabhshrivastava$ sudo docker run --privileged -v /Users/saurabhshrivastava/saurabh/kivy/practice/test:/buildozer/  -v /etc/udev/rules.d/:/etc/udev/rules.d/ tshirtman/buildozer buildozer android debug
  # Check configuration tokens
  # Ensure build layout
  # Check configuration tokens
  # Preparing build
  # Check requirements for android
  # Run 'dpkg --version'
  # Cwd None
  Debian 'dpkg' package management program version 1.18.10 (amd64).
  This is free software; see the GNU General Public License version 2 or
  later for copying conditions. There is NO warranty.
  # Search for Git (git)
  #  -&gt; found at /usr/bin/git
  # Search for Cython (cython)
  #  -&gt; found at /usr/local/bin/cython
  # Search for Java compiler (javac)
  #  -&gt; found at /usr/lib/jvm/java-8-openjdk-amd64/bin/javac
  # Search for Java keytool (keytool)
  #  -&gt; found at /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/keytool
  # Install platform
  # Run 'git clone -b stable --single-branch https://github.com/kivy/python-for-android.git python-for-android-master'
  # Cwd /buildozer/.buildozer/android/platform
  fatal: could not create work tree dir 'python-for-android-master': Permission denied
  # Command failed: git clone -b stable --single-branch https://github.com/kivy/python-for-android.git python-for-android-master
  # 
  # Buildozer failed to execute the last command
  # The error might be hidden in the log above this error
  # Please read the full log, and search for it before
  # raising an issue with buildozer itself.
  # In case of a bug report, please add a full log with log_level = 2
  </code></pre>