Amazon EB deployment

I'm having some problems with my deployment workflow. First of all: is the .elasticbeanstalk/config.yml the right place to install extra packages like node and npm? Second: is there a way to perform a deploy where I dont need to run composer update, artisan migrate, npm install? Like if all I need to is to make a quick fix to the code.

Some resources to a complete deployment flow would be apreciated, most of what I found regarding laravel deployment has been kinda basic.

Thank you