Aside from an error complaining that vendor/autoload.php is missing, I was getting this logging constantly when running docker compose up:
gnu-social-worker-1 | Fatal error: Uncaught LogicException: You need to add "symfony/framework-bundle" as a Composer dependency. in /var/www/social/bin/console:18
gnu-social-worker-1 | Stack trace:
gnu-social-worker-1 | #0 {main}
gnu-social-worker-1 | thrown in /var/www/social/bin/console on line 18