First off, peep into the .env file in Laravel. Double-check if the DB_HOST matches the service in your docker-compose.yaml. Seems like yours is mysql.

DB_CONNECTION=mysql
DB_HOST=mysql
DB_PORT=3306
DB_DATABASE=yourdbname
DB_USERNAME=youruser
DB_PASSWORD=yourpassword

Also, take a quick look at config/database.php in Laravel. If you're not using MySQL socket, ditch the unix_socket line.

'mysql' => [
   'driver' => 'mysql',
   'host' => env('DB_HOST', '127.0.0.1'),
   'port' => env('DB_PORT', '3306'),
   'database' => env('DB_DATABASE', 'forge'),
   'username' => env('DB_USERNAME', 'forge'),
   'password' => env('DB_PASSWORD', ''),
   'unix_socket' => env('DB_SOCKET', ''), // Drop this line if unnecessary
   // ...
],

Check the volumes in your docker-compose.yaml, and make sure the MySQL image (mysql/mysql-server:8.0) is all good.

After those tweaks, give running migrations another shot with Laravel Sail:

sail artisan migrate

If the struggle persists, peek into Laravel logs (storage/logs) for more details. And make sure MySQL is up and running smooth inside that Docker container. Good luck, mate!

Hello @zanoth

Did you read the documentation for Sail? (Especially about the database) https://laravel.com/docs/10.x/sail#mysql

The error gives me the idea that you didn't set/change the DB_HOST variable in your .env file to mysql is that correct?