Fix "text file busy" error reported when using AUFS storage driver
Fix "text file busy" error reported when using AUFS storage driver

This commit fixes the following error specific to AUFS:

/dockcross/entrypoint.sh: line 47: /usr/bin/gosu: Text file busy
/dockcross/entrypoint.sh: line 47: /usr/bin/gosu: Success

Thanks @sobolevn
See https://github.com/moby/moby/issues/13594#issuecomment-262441366

thewtex/cross-compilers,dockcross/dockcross,thewtex/cross-compilers,dockcross/dockcross,thewtex/cross-compilers,thewtex/cross-compilers,dockcross/dockcross,dockcross/dockcross