Add default ports for docker-compose file

[tanhongit]

Currently, the ports and app names in the docker-compose file are being called directly from the environment variables in the .env file.

This is very detrimental because in some cases users do not pay attention to this configuration request and ignore it to proceed with running the build command.
In that case, it will cause an error because the ports are unknown.

So I need a condition that if the environment variables do not exist, I will get the default port to avoid the above error.