dockerhub images assume user id 1000

[dhood]

The dockerfiles have been written to take user id into account, but now that we ship docker images instead of have users build them themselves, the user id needs to be taken into account at run time.

[dhood]

The error on a machine with user id 1002 is:

dhood@osrf-Razer-Blade:~/ariac_ws/ariac-docker$ roslaunch osrf_gear gear_playback.launch state_log_path:=`pwd`/logs/example_team/sample/gazebo/state.log
... logging to /home/dhood/.ros/log/f30bc668-1122-11e8-91d4-70188b829a0f/roslaunch-osrf-Razer-Blade-15429.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://osrf-Razer-Blade:50319/

SUMMARY
========

PARAMETERS
 * /rosdistro: indigo
 * /rosversion: 1.11.21

NODES
  /
    gazebo (gazebo_ros/gzserver)
    gazebo_gui (gazebo_ros/gzclient)

auto-starting new master
process[master]: started with pid [15441]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to f30bc668-1122-11e8-91d4-70188b829a0f
process[rosout-1]: started with pid [15454]
started core service [/rosout]
process[gazebo-2]: started with pid [15457]
process[gazebo_gui-3]: started with pid [15469]
Gazebo multi-robot simulator, version 7.7.0
Copyright (C) 2012 Open Source Robotics Foundation.
Released under the Apache 2 License.
http://gazebosim.org

[Err] [LogPlay.cc:119] Unable to load file[/home/dhood/ariac_ws/ariac-docker/logs/example_team/sample/gazebo/state.log]. Check the Gazebo server log file for more information.
[Err] [LogPlay.cc:127] EXCEPTION: Error parsing log file

[Err] [LogPlay.cc:127] EXCEPTION: Error parsing log file

^C[gazebo_gui-3] killing on exit
[gazebo-2] killing on exit
[rosout-1] killing on exit
[master] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done
dhood@osrf-Razer-Blade:~/ariac_ws/ariac-docker$ id -u $USER
1002