cannot push app

[StBurcher]

Hi,

I have a problem to push after build.
The following error occurs.

2016-12-19T14:13:24.84+0100 [API/0]      OUT Updated app with guid eafa76c9-17ad-4db7-9c1e-8ace16d96d5d ({"state"=>"STARTED                                                                  "})
2016-12-19T14:13:32.88+0100 [API/0]      ERR Failed to stage application: staging failed
2016-12-19T14:16:27.06+0100 [STG/0]      OUT Creating container
2016-12-19T14:16:27.46+0100 [STG/0]      OUT Successfully created container
2016-12-19T14:16:27.46+0100 [STG/0]      OUT Downloading app package...
2016-12-19T14:16:27.58+0100 [STG/0]      OUT Downloaded app package (591.9K)
2016-12-19T14:16:27.58+0100 [STG/0]      OUT Staging...
2016-12-19T14:16:34.06+0100 [STG/0]      OUT -------> Buildpack version 1.3.14
2016-12-19T14:16:34.13+0100 [STG/0]      OUT Using Nginx version 1.11.6
2016-12-19T14:16:34.37+0100 [STG/0]      ERR /usr/lib/ruby/2.3.0/digest.rb:50:in `initialize': No such file or directory @                                                                   rb_sysopen - /tmp/nginx.tgz (Errno::ENOENT)
2016-12-19T14:16:34.37+0100 [STG/0]      ERR    from /usr/lib/ruby/2.3.0/digest.rb:50:in `open'
2016-12-19T14:16:34.37+0100 [STG/0]      ERR    from /usr/lib/ruby/2.3.0/digest.rb:50:in `file'
2016-12-19T14:16:34.37+0100 [STG/0]      ERR    from /usr/lib/ruby/2.3.0/digest.rb:35:in `file'
2016-12-19T14:16:34.37+0100 [STG/0]      ERR    from /tmp/buildpacks/ee6e10b97601fa46b72576682de3748e/compile-extensions/bi                                                                  n/download_dependency:20:in `<main>'
2016-12-19T14:16:34.37+0100 [STG/0]      ERR Failed to compile droplet
2016-12-19T14:16:34.38+0100 [STG/0]      OUT Exit status 223
2016-12-19T14:16:34.38+0100 [STG/0]      ERR Staging failed: Exited with status 223

I behind a company proxy