Force Doctrine schema validation and update to ignore some entities ("schema_filter" does not work here).

doctrine-ignore-entities-validation.patch

diff --git a/src/Doctrine/ClassMetadataFactory.php b/src/Doctrine/ClassMetadataFactory.php
new file mode 100644
index 0000000000000000000000000000000000000000..f56ca274e79b3f93da587985b71260ea58ba5f76
--- /dev/null
+++ b/src/Doctrine/ClassMetadataFactory.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Doctrine;
+
+use App\Entity\MyEntityToIgnore;
+
+class ClassMetadataFactory extends \Doctrine\ORM\Mapping\ClassMetadataFactory
+{
+    const IGNORED_ENTITIES = [
+        MyEntityToIgnore::class,
+    ];
+
+    public function getAllMetadata()
+    {
+        $allMetadata = parent::getAllMetadata();
+
+        foreach ($allMetadata as $key => $metadata) {
+            if (in_array($metadata->getName(), self::IGNORED_ENTITIES)) {
+                unset($allMetadata[$key]);
+            }
+        }
+
+        return $allMetadata;
+    }
+}
diff --git a/src/Kernel.php b/src/Kernel.php
index a1c686ee1367421a393bfd954be59c9f78b39eef..91b40d9a805d0b02e7e280a958642fcf7f52f223 100644
--- a/src/Kernel.php
+++ b/src/Kernel.php
@@ -2,6 +2,7 @@
 
 namespace App;
 
+use App\Doctrine\ClassMetadataFactory;
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
 use Symfony\Component\Config\Loader\LoaderInterface;
 use Symfony\Component\Config\Resource\FileResource;
@@ -56,4 +57,21 @@ class Kernel extends BaseKernel
         $routes->import($confDir . '/{routes}/*' . self::CONFIG_EXTS, '/', 'glob');
         $routes->import($confDir . '/{routes}' . self::CONFIG_EXTS, '/', 'glob');
     }
+
+    protected function build(ContainerBuilder $container)
+    {
+        parent::build($container);
+
+        $container->addCompilerPass(new class() implements \Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface {
+            public function process(\Symfony\Component\DependencyInjection\ContainerBuilder $container)
+            {
+                $container
+                    ->getDefinition('doctrine.orm.default_configuration')
+                    ->addMethodCall('setClassMetadataFactoryName', [
+                        ClassMetadataFactory::class,
+                    ])
+                ;
+            }
+        });
+    }
 }

Not really sure if that would be fixed by doctrine/orm#7875