Use Dockerfile-demo

- Use Dockerfile.demo instead
- Fix welcome message displayed when session
  is created

Dockerfile-demo → Dockerfile.demo

@@ -9,7 +9,7 @@ RUN npm link
 RUN echo 'PS1="\\$ "' >> /home/node/.bashrc
 RUN echo export TMOUT=30 >> /home/node/.bashrc
 RUN echo 'echo Here you can try the kmdr cli without installing it on your local machine' >> /home/node/.bashrc
-RUN echo 'read -p "Press any key to start your demo"' >> /home/node/.bashrc
+RUN echo 'read -p "Press ENTER key to start your demo"' >> /home/node/.bashrc
 RUN echo 'clear' >> /home/node/.bashrc
 RUN echo 'echo "$ kmdr explain"; kmdr explain' >> /home/node/.bashrc
 RUN echo 'echo Just type "'kmdr explain'" to run the program again' >> /home/node/.bashrc