ROS Turtlesim Container

- Add Dockerfile for running turtlesim
- Add turtlesim.sh to run ros commands inside container

src/ros-turtlesim/Dockerfile

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+# ROS Dockerfile
+
+# Use official image for ROS Melodic Morenia
+FROM ros:melodic
+
+# Install turtlesim dependencies
+RUN sudo apt-get update && apt-get install -y \
+        ros-melodic-ros-tutorials
+
+CMD ["/bin/bash"]

src/ros-turtlesim/turtlesim.sh

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+#!/bin/bash
+
+roscore &
+rosrun turtlesim turtlesim_node &
+rosrun turtlesim turtle_teleop_key