Create a customized laravel base Project and install it for future projects

I install a new Laravel project and I have been applied Many changes on it for my own purposes. for Example my custom admin panel design and related css and javascript files.

In addition to, I added some packages that are required on whole project.

Now , if I want to Start a new Project , I must to install a fresh laravel Project and add those files and packages manually again that It takes a lot of time.

Is there a way that I could store this base laravel project on it (for example Github) and install it via composer?

Yes, you can use Github to create a private/public repository then when you start e new project you clone that repository and then use composer install command to get the dependencies.