docs(articles): SEO titles, intros and a section preview image for From Magento to Symfony
en/articles/magento-to-symfony/core/di.md
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title: 'Symfony DI for Magento developers: di.xml → services.yaml'
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# DI container
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The biggest chunk of knowledge that carries over. Constructor injection is the same, but the container is compiled into PHP, all services are private, and most wiring is inferred from types without any configuration.