[~]: Refactor docker-compose.yml to use environment variables for configuration and replace s3mock with minio service

[MyEcoria]

This pull request updates the docker-compose.yml file to improve configurability and replace the s3mock service with minio. The changes primarily focus on making environment variables dynamic and enhancing compatibility with production-ready services.

Configurability Enhancements:

• Replaced hardcoded environment variable values with dynamic values using ${VARIABLE_NAME} syntax to allow customization via .env files or environment variables. This change applies to services like app, worker, db, and minio.

Service Replacement:

• Replaced the s3mock service with minio, updating the ACCESS_URL and related configurations to reflect the new service. This change enhances compatibility with production-grade object storage.

Database Improvements:

• Added support for MYSQL_USER and MYSQL_PASSWORD in the db service and configured additional database options (--default-authentication-plugin=mysql_native_password, --character-set-server=utf8mb4, --collation-server=utf8mb4_unicode_ci) for better compatibility and performance.

Volume Management:

• Introduced a new volume minio_data for the minio service to persist object storage data.