Updated Dockerfile .bashrc creation to be more readable

Dockerfile

@@ -19,13 +19,17 @@ RUN apt-get install -y -qq \
 COPY python-requirements.txt python-requirements.txt
 RUN pip3 install -r python-requirements.txt
 
+# ABSOLUTELY DO NOT use single quotes inside this block
+# end any new lines with "\n\" (no quotes)
+RUN printf '\n# automatically generated by Dockerfile \n\
+source "/opt/ros/humble/setup.bash" --                \n\
+cd rb_ws                                              \n\
+colcon build --symlink-install                        \n\
+source install/local_setup.bash                       \n\
+chmod -R +x src/buggy/scripts/                        \n\
+source environments/docker_env.bash                   \n\
+\n' >> ~/.bashrc
 
-RUN echo 'source "/opt/ros/humble/setup.bash" --' >> ~/.bashrc && \
-    echo 'cd rb_ws' >> ~/.bashrc && \
-    echo 'colcon build --symlink-install' >> ~/.bashrc && \
-    echo 'source install/local_setup.bash' >> ~/.bashrc && \
-    echo 'chmod -R +x src/buggy/scripts/' >> ~/.bashrc && \
-    echo 'source environments/docker_env.bash' >> ~/.bashrc 
 
 # add mouse to tmux
 RUN echo 'set -g mouse on' >> ~/.tmux.conf