[Docker] Open Multiple Instances of Web App

Background
While developing my web application, I used docker compose to start 4 containers for the routine development, but my friend wants to try some new features / bug fixes which is completed, I don't want to interrupt his experiences while repeatedly start and stop the server during the development processes.

I then tried to re-run docker-compose command again but failed because same project name is used (default folder name).

Solutions
Outcome I need use docker-compose -p  to specify exactly the project name to allow multiple instances initialization of my project. It is very useful when you need to start the same instance of web application within the same machine. Remember to adjust the port number.

References

• Using p flag in docker compose (official)
• Run multiple docker compose instance