Update ubuntu

- `ubuntu:precise`: 20151020
- `ubuntu:trusty`: 20151021
- `ubuntu:vivid`: 20151021
- `ubuntu:wily`: 20151019

library/ubuntu

@@ -5,31 +5,31 @@
 # see also https://wiki.ubuntu.com/Releases#Current
 
 # commits: (master..dist)
-#  - 50b3bf2 Update tarballs
-#    - `ubuntu:precise`: 20150924
-#    - `ubuntu:trusty`: 20151009
-#    - `ubuntu:vivid`: 20150930
-#    - `ubuntu:wily`: 20151009
+#  - 380b4ed Update tarballs
+#    - `ubuntu:precise`: 20151020
+#    - `ubuntu:trusty`: 20151021
+#    - `ubuntu:vivid`: 20151021
+#    - `ubuntu:wily`: 20151019
 
-# 20150924
-12.04.5: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 precise
-12.04: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 precise
-precise-20150924: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 precise
-precise: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 precise
+# 20151020
+12.04.5: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 precise
+12.04: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 precise
+precise-20151020: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 precise
+precise: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 precise
 
-# 20151009
-14.04.3: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 trusty
-14.04: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 trusty
-trusty-20151009: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 trusty
-trusty: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 trusty
-latest: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 trusty
+# 20151021
+14.04.3: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 trusty
+14.04: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 trusty
+trusty-20151021: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 trusty
+trusty: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 trusty
+latest: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 trusty
 
-# 20150930
-15.04: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 vivid
-vivid-20150930: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 vivid
-vivid: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 vivid
+# 20151021
+15.04: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 vivid
+vivid-20151021: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 vivid
+vivid: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 vivid
 
-# 20151009
-15.10: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 wily
-wily-20151009: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 wily
-wily: git://github.com/tianon/docker-brew-ubuntu-core@50b3bf21537afb96d95ccb25996c7bceb16c38d8 wily
+# 20151019
+15.10: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 wily
+wily-20151019: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 wily
+wily: git://github.com/tianon/docker-brew-ubuntu-core@380b4edf3d7e68499f81acc3eb8d22d59236b7b2 wily