Work on development environment.

doc/prepare_ros_computer.md

+# Prepare Existsing Computer
+
+If you already have a ROS computer with a docker daeamon running you can do:
+
+### Configuring Development Computer
+
+You need an Ubuntu machine with Docker installed.  Tested with 18.04 and 20.04.
+
+To install the public LRS repos containing mostly messages definitions and service calls:
+```bash
+mkdir lrs_ws
+cd lrs_ws
+mkdir src
+cd src
+git clone https://gitlab.liu.se/lrs/lrs_msgs_common.git
+git clone https://gitlab.liu.se/lrs/lrs_kdb_bridge_msgs.git
+git clone https://gitlab.liu.se/lrs/lrs_kdb_msgs.git
+git clone https://gitlab.liu.se/lrs/lrs_srvs_wdb.git
+git clone https://gitlab.liu.se/lrs/lrs_team_msgs.git
+git clone https://gitlab.liu.se/lrs/lrs_msgs_del.git
+git clone https://gitlab.liu.se/lrs/lrs_msgs_mp.git
+git clone https://gitlab.liu.se/lrs/lrs_msgs_tfpop.git
+git clone https://gitlab.liu.se/lrs/lrs_msgs_tst.git
+git clone https://gitlab.liu.se/lrs/lrs_srvs_exec.git
+git clone https://gitlab.liu.se/lrs/lrs_srvs_wdb.git
+git clone https://gitlab.liu.se/lrs/lrs_srvs_tst.git
+git clone https://gitlab.liu.se/lrs/lrs_launch.git
+```
+