fix(applications): harden image validation

app/Livewire/Project/Application/General.php

@@ -157,8 +157,8 @@ class General extends Component
             'portsMappings' => ValidationPatterns::portMappingRules(),
             'customNetworkAliases' => 'nullable',
             'dockerfile' => 'nullable',
-            'dockerRegistryImageName' => 'nullable',
-            'dockerRegistryImageTag' => 'nullable',
+            'dockerRegistryImageName' => ValidationPatterns::dockerImageNameRules(),
+            'dockerRegistryImageTag' => ValidationPatterns::dockerImageTagRules(),
             'dockerfileLocation' => ValidationPatterns::filePathRules(),
             'dockerComposeLocation' => ValidationPatterns::filePathRules(),
             'dockerCompose' => 'nullable',
@@ -848,7 +848,7 @@ class General extends Component
             }
             if ($this->buildPack === 'dockerimage') {
                 $this->validate([
-                    'dockerRegistryImageName' => 'required',
+                    'dockerRegistryImageName' => ValidationPatterns::dockerImageNameRules(required: true),
                 ]);
             }