Adding new changes from @yosifkit [comments](https://github.com/docker-library/official-images/pull/751#issuecomment-106960591).

Removing PDT+07 time change
Cleaning apt lists after every update
Switching to keyserver for apt-key
Now using ros_entrypoint.sh

library/ros

@@ -1,7 +1,8 @@
 # maintainer: Dirk Thomas <[email protected]> (@dirk-thomas)
 
-latest: git://github.com/osrf/docker_images@482be6eab776104537b95fe0511ed3c3c1a2ef2c ros/indigo/indigo-ros-core
-indigo-ros-core: git://github.com/osrf/docker_images@482be6eab776104537b95fe0511ed3c3c1a2ef2c ros/indigo/indigo-ros-core
-indigo-ros-base: git://github.com/osrf/docker_images@482be6eab776104537b95fe0511ed3c3c1a2ef2c ros/indigo/indigo-ros-base
-indigo-robot: git://github.com/osrf/docker_images@482be6eab776104537b95fe0511ed3c3c1a2ef2c ros/indigo/indigo-robot
-indigo-perception: git://github.com/osrf/docker_images@482be6eab776104537b95fe0511ed3c3c1a2ef2c ros/indigo/indigo-perception
+indigo-ros-core:    git://github.com/osrf/docker_images@0e68d4b4dbee88dc42561cc4ea83992f06f341dc ros/indigo/indigo-ros-core
+indigo-ros-base:    git://github.com/osrf/docker_images@0e68d4b4dbee88dc42561cc4ea83992f06f341dc ros/indigo/indigo-ros-base
+indigo-robot:       git://github.com/osrf/docker_images@0e68d4b4dbee88dc42561cc4ea83992f06f341dc ros/indigo/indigo-robot
+indigo-perception:  git://github.com/osrf/docker_images@0e68d4b4dbee88dc42561cc4ea83992f06f341dc ros/indigo/indigo-perception
+
+latest:             git://github.com/osrf/docker_images@0e68d4b4dbee88dc42561cc4ea83992f06f341dc ros/indigo/indigo-ros-base