diff --git a/.vortex/installer/src/Command/InstallCommand.php b/.vortex/installer/src/Command/InstallCommand.php
index d85b07528..3bb0ad62a 100644
--- a/.vortex/installer/src/Command/InstallCommand.php
+++ b/.vortex/installer/src/Command/InstallCommand.php
@@ -78,7 +78,7 @@ protected function configure(): void {
 
     $this->addOption(static::OPTION_ROOT, NULL, InputOption::VALUE_REQUIRED, 'Path to the root for file path resolution. If not specified, current directory is used.');
     $this->addOption(static::OPTION_NO_INTERACTION, 'n', InputOption::VALUE_NONE, 'Do not ask any interactive question.');
-    $this->addOption(static::OPTION_CONFIG, 'c', InputOption::VALUE_REQUIRED, 'A JSON string with options.');
+    $this->addOption(static::OPTION_CONFIG, 'c', InputOption::VALUE_REQUIRED, 'A JSON string with options or a path to a JSON file.');
     $this->addOption(static::OPTION_URI, 'l', InputOption::VALUE_REQUIRED, 'Remote or local repository URI with an optional git ref set after @.');
     $this->addOption(static::OPTION_NO_CLEANUP, NULL, InputOption::VALUE_NONE, 'Do not remove installer after successful installation.');
   }
@@ -207,7 +207,12 @@ protected function checkRequirements(): void {
    *   Array of CLI options.
    */
   protected function resolveOptions(array $arguments, array $options): void {
-    $config = isset($options[static::OPTION_CONFIG]) && is_scalar($options[static::OPTION_CONFIG]) ? strval($options[static::OPTION_CONFIG]) : '{}';
+    $config = '{}';
+    if (isset($options[static::OPTION_CONFIG]) && is_scalar($options[static::OPTION_CONFIG])) {
+      $config_candidate = strval($options[static::OPTION_CONFIG]);
+      $config = is_file($config_candidate) ? (string) file_get_contents($config_candidate) : $config_candidate;
+    }
+
     $this->config = Config::fromString($config);
 
     $this->config->setQuiet($options[static::OPTION_QUIET]);
diff --git a/.vortex/installer/src/Prompts/PromptManager.php b/.vortex/installer/src/Prompts/PromptManager.php
index c74296038..17649dcf7 100644
--- a/.vortex/installer/src/Prompts/PromptManager.php
+++ b/.vortex/installer/src/Prompts/PromptManager.php
@@ -506,14 +506,21 @@ private function args(string $handler_class, mixed $default_override = NULL, arr
 
     // Find appropriate default value.
     $default_from_handler = $handler->default($responses);
-
-    $env_var = static::makeEnvName($id);
-    $env_val = Env::get($env_var);
+    // Create the env var name.
+    $var_name = static::makeEnvName($id);
+    // Get from config.
+    $config_val = $this->config->get($var_name);
+    $default_from_config = is_null($config_val) ? NULL : $config_val;
+    // Get from env.
+    $env_val = Env::get($var_name);
     $default_from_env = is_null($env_val) ? NULL : Env::toValue($env_val);
-
+    // Get from discovery.
     $default_from_discovery = $this->handlers[$id]->discover();
 
-    if (!is_null($default_from_env)) {
+    if (!is_null($default_from_config)) {
+      $default = $default_from_config;
+    }
+    elseif (!is_null($default_from_env)) {
       $default = $default_from_env;
     }
     elseif (!is_null($default_from_discovery)) {
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.ahoy.yml b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.ahoy.yml
new file mode 100644
index 000000000..becee6a60
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.ahoy.yml
@@ -0,0 +1,12 @@
+@@ -99,11 +99,6 @@
+     usage: Run Drush commands in the CLI service container.
+     cmd: ahoy cli "vendor/bin/drush -l \${VORTEX_LOCALDEV_URL} $*"
+ 
+-  flush-valkey:
+-    aliases: [flush-redis]
+-    usage: Flush Valkey cache.
+-    cmd: docker compose exec valkey valkey-cli flushall
+-
+   # ----------------------------------------------------------------------------
+   # Application commands.
+   # ----------------------------------------------------------------------------
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.env b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.env
new file mode 100644
index 000000000..0f7539740
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/.env
@@ -0,0 +1,11 @@
+@@ -70,10 +70,6 @@
+ # Shield message.
+ DRUPAL_SHIELD_PRINT="Restricted access."
+ 
+-# Enable Redis/Valkey integration.
+-# See settings.redis.php for details.
+-DRUPAL_REDIS_ENABLED=1
+-
+ # Enable ClamAV integration.
+ DRUPAL_CLAMAV_ENABLED=1
+ 
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/README.md b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/README.md
new file mode 100644
index 000000000..816cff112
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/README.md
@@ -0,0 +1,16 @@
+@@ -2,12 +2,12 @@
+ 
+ # star wars
+ 
+-Drupal 11 implementation of star wars for star wars Org
++Drupal 11 implementation of star wars for My custom org
+ 
+-[![Database, Build, Test and Deploy](https://github.com/star_wars_org/star_wars/actions/workflows/build-test-deploy.yml/badge.svg)](https://github.com/star_wars_org/star_wars/actions/workflows/build-test-deploy.yml)
++[![Database, Build, Test and Deploy](https://github.com/my_custom_org/star_wars/actions/workflows/build-test-deploy.yml/badge.svg)](https://github.com/my_custom_org/star_wars/actions/workflows/build-test-deploy.yml)
+ 
+ ![Drupal 11](https://img.shields.io/badge/Drupal-11-blue.svg)
+-[![codecov](https://codecov.io/gh/star_wars_org/star_wars/graph/badge.svg)](https://codecov.io/gh/star_wars_org/star_wars)
++[![codecov](https://codecov.io/gh/my_custom_org/star_wars/graph/badge.svg)](https://codecov.io/gh/my_custom_org/star_wars)
+ 
+ ![Automated updates](https://img.shields.io/badge/Automated%20updates-RenovateBot-brightgreen.svg)
+ 
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/composer.json b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/composer.json
new file mode 100644
index 000000000..0a34d0ecc
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/composer.json
@@ -0,0 +1,17 @@
+@@ -1,6 +1,6 @@
+ {
+-    "name": "star_wars_org/star_wars",
+-    "description": "Drupal 11 implementation of star wars for star wars Org",
++    "name": "my_custom_org/star_wars",
++    "description": "Drupal 11 implementation of star wars for My custom org",
+     "license": "proprietary",
+     "type": "project",
+     "require": {
+@@ -17,7 +17,6 @@
+         "drupal/environment_indicator": "__VERSION__",
+         "drupal/pathauto": "__VERSION__",
+         "drupal/redirect": "__VERSION__",
+-        "drupal/redis": "__VERSION__",
+         "drupal/robotstxt": "__VERSION__",
+         "drupal/search_api": "__VERSION__",
+         "drupal/search_api_solr": "__VERSION__",
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/docker-compose.yml b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/docker-compose.yml
new file mode 100644
index 000000000..be92b8373
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/docker-compose.yml
@@ -0,0 +1,29 @@
+@@ -52,8 +52,6 @@
+   # Drupal Shield credentials.
+   DRUPAL_SHIELD_USER: ${DRUPAL_SHIELD_USER:-}
+   DRUPAL_SHIELD_PASS: ${DRUPAL_SHIELD_PASS:-}
+-  # Valkey integration flag.
+-  DRUPAL_REDIS_ENABLED: ${DRUPAL_REDIS_ENABLED:-}
+ 
+ # The default user under which the containers should run.
+ x-user: &default-user
+@@ -146,9 +144,6 @@
+     ports:
+       - '3306' # Database port in a container. Find port on host with `ahoy info` or `docker compose port database 3306`.
+ 
+-  valkey:
+-    image: uselagoon/valkey-8:__VERSION__
+-
+   solr:
+     build:
+       context: .
+@@ -196,8 +191,7 @@
+       - clamav
+       - cli
+       - database
+-      - valkey
+-    command: database:3306 clamav:3310 valkey:6379
++    command: database:3306 clamav:3310
+ 
+ networks:           ### Use external networks locally. Automatically removed in CI.
+   amazeeio-network: ### Automatically removed in CI.
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/package.json b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/package.json
new file mode 100644
index 000000000..961ff089b
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/package.json
@@ -0,0 +1,8 @@
+@@ -1,6 +1,6 @@
+ {
+   "name": "star_wars",
+-  "description": "Drupal 11 implementation of star wars for star wars Org",
++  "description": "Drupal 11 implementation of star wars for My custom org",
+   "license": "proprietary",
+   "private": true,
+   "engines": {
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/scripts/custom/provision-10-example.sh b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/scripts/custom/provision-10-example.sh
new file mode 100644
index 000000000..b33592c40
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/scripts/custom/provision-10-example.sh
@@ -0,0 +1,10 @@
+@@ -42,9 +42,6 @@
+   task "Installing contrib modules."
+   drush pm:install admin_toolbar coffee config_split config_update media environment_indicator pathauto redirect robotstxt shield stage_file_proxy
+ 
+-  task "Installing Redis module."
+-  drush pm:install redis || true
+-
+   task "Installing and configuring ClamAV."
+   drush pm:install clamav
+   drush config-set clamav.settings mode_daemon_tcpip.hostname clamav
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/tests/behat/features/-redis.feature b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/tests/behat/features/-redis.feature
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/tests/phpunit/Drupal/SwitchableSettingsTest.php b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/tests/phpunit/Drupal/SwitchableSettingsTest.php
new file mode 100644
index 000000000..9639c7b5e
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/tests/phpunit/Drupal/SwitchableSettingsTest.php
@@ -0,0 +1,106 @@
+@@ -228,105 +228,6 @@
+   }
+ 
+   /**
+-   * Test Valkey settings.
+-   */
+-  public function testValkey(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_REDIS_ENABLED' => 1,
+-      'VALKEY_HOST' => 'valkey_host',
+-      'VALKEY_SERVICE_PORT' => 1234,
+-      'VORTEX_REDIS_EXTENSION_LOADED' => 1,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $settings['redis.connection']['interface'] = 'PhpRedis';
+-    $settings['redis.connection']['host'] = 'valkey_host';
+-    $settings['redis.connection']['port'] = 1234;
+-    $settings['cache']['default'] = 'cache.backend.redis';
+-
+-    $this->assertArrayHasKey('bootstrap_container_definition', $this->settings);
+-    unset($this->settings['bootstrap_container_definition']);
+-
+-    $this->assertSettingsContains($settings);
+-  }
+-
+-  /**
+-   * Test Valkey partial settings.
+-   */
+-  public function testValkeyPartial(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_REDIS_ENABLED' => 1,
+-      'VALKEY_HOST' => 'valkey_host',
+-      'VALKEY_SERVICE_PORT' => 1234,
+-      'VORTEX_REDIS_EXTENSION_LOADED' => 0,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $settings['redis.connection']['interface'] = 'PhpRedis';
+-    $settings['redis.connection']['host'] = 'valkey_host';
+-    $settings['redis.connection']['port'] = 1234;
+-    $no_settings['cache']['default'] = 'cache.backend.redis';
+-
+-    $this->assertArrayNotHasKey('bootstrap_container_definition', $this->settings);
+-
+-    $this->assertSettingsContains($settings);
+-    $this->assertSettingsNotContains($no_settings);
+-  }
+-
+-  /**
+-   * Test Redis settings with REDIS_* environment variables.
+-   */
+-  public function testRedisVariables(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_REDIS_ENABLED' => 1,
+-      'REDIS_HOST' => 'redis_host',
+-      'REDIS_SERVICE_PORT' => 6380,
+-      'VORTEX_REDIS_EXTENSION_LOADED' => 1,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $settings['redis.connection']['interface'] = 'PhpRedis';
+-    $settings['redis.connection']['host'] = 'redis_host';
+-    $settings['redis.connection']['port'] = 6380;
+-    $settings['cache']['default'] = 'cache.backend.redis';
+-
+-    $this->assertArrayHasKey('bootstrap_container_definition', $this->settings);
+-    unset($this->settings['bootstrap_container_definition']);
+-
+-    $this->assertSettingsContains($settings);
+-  }
+-
+-  /**
+-   * Test Redis fallback when both VALKEY_* and REDIS_* variables are set.
+-   */
+-  public function testRedisValkeyPrecedence(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_REDIS_ENABLED' => 1,
+-      'VALKEY_HOST' => 'valkey_host',
+-      'VALKEY_SERVICE_PORT' => 1234,
+-      'REDIS_HOST' => 'redis_host',
+-      'REDIS_SERVICE_PORT' => 6380,
+-      'VORTEX_REDIS_EXTENSION_LOADED' => 1,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    // VALKEY_* variables should take precedence over REDIS_* variables.
+-    $settings['redis.connection']['interface'] = 'PhpRedis';
+-    $settings['redis.connection']['host'] = 'valkey_host';
+-    $settings['redis.connection']['port'] = 1234;
+-    $settings['cache']['default'] = 'cache.backend.redis';
+-
+-    $this->assertArrayHasKey('bootstrap_container_definition', $this->settings);
+-    unset($this->settings['bootstrap_container_definition']);
+-
+-    $this->assertSettingsContains($settings);
+-  }
+-
+-  /**
+    * Test Shield config.
+    */
+   #[DataProvider('dataProviderShield')]
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/web/sites/default/includes/modules/-settings.redis.php b/.vortex/installer/tests/Fixtures/install/non_interactive_config_file/web/sites/default/includes/modules/-settings.redis.php
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.docker/-clamav.dockerfile b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.docker/-clamav.dockerfile
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.docker/config/clamav/-clamav.conf b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.docker/config/clamav/-clamav.conf
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.env b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.env
new file mode 100644
index 000000000..c3b943e36
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/.env
@@ -0,0 +1,16 @@
+@@ -74,15 +74,6 @@
+ # See settings.redis.php for details.
+ DRUPAL_REDIS_ENABLED=1
+ 
+-# Enable ClamAV integration.
+-DRUPAL_CLAMAV_ENABLED=1
+-
+-# ClamAV mode.
+-#
+-# Run ClamAV in either daemon mode by setting it to 0 (or 'daemon') or in
+-# executable mode by setting it to 1.
+-DRUPAL_CLAMAV_MODE=daemon
+-
+ ################################################################################
+ #                                 PROVISION                                    #
+ ################################################################################
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/README.md b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/README.md
new file mode 100644
index 000000000..2aad41ef6
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/README.md
@@ -0,0 +1,16 @@
+@@ -2,12 +2,12 @@
+ 
+ # star wars
+ 
+-Drupal 11 implementation of star wars for star wars Org
++Drupal 11 implementation of star wars for My other custom org
+ 
+-[![Database, Build, Test and Deploy](https://github.com/star_wars_org/star_wars/actions/workflows/build-test-deploy.yml/badge.svg)](https://github.com/star_wars_org/star_wars/actions/workflows/build-test-deploy.yml)
++[![Database, Build, Test and Deploy](https://github.com/my_other_custom_org/star_wars/actions/workflows/build-test-deploy.yml/badge.svg)](https://github.com/my_other_custom_org/star_wars/actions/workflows/build-test-deploy.yml)
+ 
+ ![Drupal 11](https://img.shields.io/badge/Drupal-11-blue.svg)
+-[![codecov](https://codecov.io/gh/star_wars_org/star_wars/graph/badge.svg)](https://codecov.io/gh/star_wars_org/star_wars)
++[![codecov](https://codecov.io/gh/my_other_custom_org/star_wars/graph/badge.svg)](https://codecov.io/gh/my_other_custom_org/star_wars)
+ 
+ ![Automated updates](https://img.shields.io/badge/Automated%20updates-RenovateBot-brightgreen.svg)
+ 
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/composer.json b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/composer.json
new file mode 100644
index 000000000..f3e2b8d09
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/composer.json
@@ -0,0 +1,17 @@
+@@ -1,6 +1,6 @@
+ {
+-    "name": "star_wars_org/star_wars",
+-    "description": "Drupal 11 implementation of star wars for star wars Org",
++    "name": "my_other_custom_org/star_wars",
++    "description": "Drupal 11 implementation of star wars for My other custom org",
+     "license": "proprietary",
+     "type": "project",
+     "require": {
+@@ -8,7 +8,6 @@
+         "composer/installers": "__VERSION__",
+         "cweagans/composer-patches": "__VERSION__",
+         "drupal/admin_toolbar": "__VERSION__",
+-        "drupal/clamav": "__VERSION__",
+         "drupal/coffee": "__VERSION__",
+         "drupal/config_split": "__VERSION__",
+         "drupal/config_update": "__VERSION__",
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/docker-compose.yml b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/docker-compose.yml
new file mode 100644
index 000000000..ea83ab239
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/docker-compose.yml
@@ -0,0 +1,31 @@
+@@ -166,17 +166,6 @@
+     ports:
+       - '8983' # Solr port in a container. Find port on host with `ahoy info` or `docker compose port solr 8983`.
+ 
+-  clamav:
+-    build:
+-      context: .
+-      dockerfile: .docker/clamav.dockerfile
+-    environment:
+-      <<: *default-environment
+-    ports:
+-      - '3310' # Find port on host with `docker compose port clamav 3310`.
+-    networks:
+-      - default
+-
+   # Chrome container, used for browser testing.
+   chrome:
+     image: selenium/standalone-chromium:__VERSION__
+@@ -193,11 +182,10 @@
+   wait_dependencies:
+     image: drevops/docker-wait-for-dependencies:__VERSION__
+     depends_on:
+-      - clamav
+       - cli
+       - database
+       - valkey
+-    command: database:3306 clamav:3310 valkey:6379
++    command: database:3306  valkey:6379
+ 
+ networks:           ### Use external networks locally. Automatically removed in CI.
+   amazeeio-network: ### Automatically removed in CI.
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/package.json b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/package.json
new file mode 100644
index 000000000..08be5967b
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/package.json
@@ -0,0 +1,8 @@
+@@ -1,6 +1,6 @@
+ {
+   "name": "star_wars",
+-  "description": "Drupal 11 implementation of star wars for star wars Org",
++  "description": "Drupal 11 implementation of star wars for My other custom org",
+   "license": "proprietary",
+   "private": true,
+   "engines": {
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/scripts/custom/provision-10-example.sh b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/scripts/custom/provision-10-example.sh
new file mode 100644
index 000000000..84cb13a1f
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/scripts/custom/provision-10-example.sh
@@ -0,0 +1,11 @@
+@@ -45,10 +45,6 @@
+   task "Installing Redis module."
+   drush pm:install redis || true
+ 
+-  task "Installing and configuring ClamAV."
+-  drush pm:install clamav
+-  drush config-set clamav.settings mode_daemon_tcpip.hostname clamav
+-
+   task "Installing Solr search modules."
+   drush pm:install search_api search_api_solr
+ 
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/tests/behat/features/-clamav.feature b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/tests/behat/features/-clamav.feature
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/tests/phpunit/Drupal/SwitchableSettingsTest.php b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/tests/phpunit/Drupal/SwitchableSettingsTest.php
new file mode 100644
index 000000000..5441d77b3
--- /dev/null
+++ b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/tests/phpunit/Drupal/SwitchableSettingsTest.php
@@ -0,0 +1,63 @@
+@@ -20,62 +20,6 @@
+ class SwitchableSettingsTest extends SettingsTestCase {
+ 
+   /**
+-   * Test ClamAV configs in Daemon mode with defaults.
+-   */
+-  public function testClamavDaemonCustom(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_CLAMAV_ENABLED' => TRUE,
+-      'DRUPAL_CLAMAV_MODE' => 'daemon',
+-      'CLAMAV_HOST' => 'custom_clamav_host',
+-      'CLAMAV_PORT' => 3333,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $config['clamav.settings']['scan_mode'] = 0;
+-    $config['clamav.settings']['mode_daemon_tcpip']['hostname'] = 'custom_clamav_host';
+-    $config['clamav.settings']['mode_daemon_tcpip']['port'] = 3333;
+-
+-    $this->assertConfigContains($config);
+-  }
+-
+-  /**
+-   * Test ClamAV configs in Executable mode.
+-   */
+-  public function testClamavExecutable(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_CLAMAV_ENABLED' => TRUE,
+-      'CLAMAV_HOST' => 'custom_clamav_host',
+-      'CLAMAV_PORT' => 3333,
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $config['clamav.settings']['scan_mode'] = 1;
+-    $config['clamav.settings']['executable_path'] = '/usr/bin/clamscan';
+-
+-    $this->assertConfigContains($config);
+-  }
+-
+-  /**
+-   * Test ClamAV configs in Daemon mode with defaults.
+-   */
+-  public function testClamavDaemonDefaults(): void {
+-    $this->setEnvVars([
+-      'DRUPAL_CLAMAV_ENABLED' => TRUE,
+-      'DRUPAL_CLAMAV_MODE' => 'daemon',
+-    ]);
+-
+-    $this->requireSettingsFile();
+-
+-    $config['clamav.settings']['scan_mode'] = 0;
+-    $config['clamav.settings']['mode_daemon_tcpip']['hostname'] = 'clamav';
+-    $config['clamav.settings']['mode_daemon_tcpip']['port'] = 3310;
+-
+-    $this->assertConfigContains($config);
+-  }
+-
+-  /**
+    * Test Config Split config.
+    */
+   #[DataProvider('dataProviderConfigSplit')]
diff --git a/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/web/sites/default/includes/modules/-settings.clamav.php b/.vortex/installer/tests/Fixtures/install/non_interactive_config_string/web/sites/default/includes/modules/-settings.clamav.php
new file mode 100644
index 000000000..e69de29bb
diff --git a/.vortex/installer/tests/Functional/Handlers/AbstractInstallTestCase.php b/.vortex/installer/tests/Functional/Handlers/AbstractInstallTestCase.php
index 8db170789..b9ae5e39b 100644
--- a/.vortex/installer/tests/Functional/Handlers/AbstractInstallTestCase.php
+++ b/.vortex/installer/tests/Functional/Handlers/AbstractInstallTestCase.php
@@ -18,6 +18,11 @@
  */
 abstract class AbstractInstallTestCase extends FunctionalTestCase {
 
+  /**
+   * Override options to pass to the install command.
+   */
+  public array $installOptions = [];
+
   protected function setUp(): void {
     parent::setUp();
 
@@ -42,7 +47,7 @@ public function testInstall(
       $before($this);
     }
 
-    $this->runNonInteractiveInstall();
+    $this->runNonInteractiveInstall(options: $this->installOptions);
 
     $expected = empty($expected) ? ['Welcome to the Vortex non-interactive installer'] : $expected;
     $this->assertApplicationOutputContains($expected);
diff --git a/.vortex/installer/tests/Functional/Handlers/BaselineInstallTest.php b/.vortex/installer/tests/Functional/Handlers/BaselineInstallTest.php
index 52149e25c..d94b34b6c 100644
--- a/.vortex/installer/tests/Functional/Handlers/BaselineInstallTest.php
+++ b/.vortex/installer/tests/Functional/Handlers/BaselineInstallTest.php
@@ -31,6 +31,7 @@
 use DrevOps\VortexInstaller\Prompts\PromptManager;
 use DrevOps\VortexInstaller\Utils\Config;
 use DrevOps\VortexInstaller\Utils\Downloader;
+use DrevOps\VortexInstaller\Utils\File;
 use DrevOps\VortexInstaller\Utils\Git;
 use DrevOps\VortexInstaller\Utils\Tui;
 use PHPUnit\Framework\Attributes\CoversClass;
@@ -79,6 +80,35 @@ public static function dataProviderInstall(): array {
         NULL,
         ['Welcome to the Vortex non-interactive installer'],
       ],
+
+      'non-interactive, config file' => [
+        static::cw(function (AbstractInstallTestCase $test): void {
+          $config_file = static::$tmp . DIRECTORY_SEPARATOR . 'config.json';
+          File::dump($config_file, (string) json_encode([
+            // Test overriding scalar value.
+            PromptManager::makeEnvName(Org::id()) => 'My custom org',
+            // Test overriding array value.
+            PromptManager::makeEnvName(Services::id()) => [Services::SOLR, Services::CLAMAV],
+          ]));
+          $test->installOptions['config'] = $config_file;
+        }),
+        NULL,
+        ['Welcome to the Vortex non-interactive installer'],
+      ],
+
+      'non-interactive, config string' => [
+        static::cw(function (AbstractInstallTestCase $test): void {
+          $config_string = (string) json_encode([
+            // Test overriding scalar value.
+            PromptManager::makeEnvName(Org::id()) => 'My other custom org',
+            // Test overriding array value.
+            PromptManager::makeEnvName(Services::id()) => [Services::SOLR, Services::VALKEY],
+          ]);
+          $test->installOptions['config'] = $config_string;
+        }),
+        NULL,
+        ['Welcome to the Vortex non-interactive installer'],
+      ],
     ];
   }