php artisan clear-compiled is trying to read databases before phpunit

I'm starting to work in CI with Semaphoreci ( https://semaphoreci.com ) and the instruction for the process are very simple:

1. In a Ubuntu VM, php 5.6 server, do a pull from Git
2. Run "composer install --prefer-source"
3. Run "phpunit"

The problem appear on 2), after installing dependencies from the lock file, Laravel execute the command "php artisan clear-compiled" AND the error appears:

Generating autoload files
> php artisan clear-compiled

  [Illuminate\Database\QueryException]                                                                          
  SQLSTATE[HY000]: General error: 1 no such table: users (SQL: XXXX)  

When executing the same commad on local, having the same variables and the database in 'driver' => 'sqlite' it finish fine:

Generating autoload files
> php artisan clear-compiled
> php artisan optimize
Generating optimized class loader
Compiling common classes

The command should be fine, the fix is not "delete the command", is there any other way?? because I can't get to the 3) command "phpunit" and there the DB magic happens.