Add an AppSpecificAuthToken data model for app-specific auth tokens. These will be used for the Docker CLI in place of username+password

util/config/validators/validate_apptokenauth.py

@@ -0,0 +1,19 @@
+from util.config.validators import BaseValidator, ConfigValidationException
+
+class AppTokenAuthValidator(BaseValidator):
+  name = "apptoken-auth"
+
+  @classmethod
+  def validate(cls, config, user, user_password):
+    if config.get('AUTHENTICATION_TYPE', 'Database') != 'AppToken':
+      return
+
+    # Ensure that app tokens are enabled, as they are required.
+    if not config.get('FEATURE_APP_SPECIFIC_TOKENS', False):
+      msg = 'Application token support must be enabled to use External Application Token auth'
+      raise ConfigValidationException(msg)
+
+    # Ensure that direct login is disabled.
+    if config.get('FEATURE_DIRECT_LOGIN', True):
+      msg = 'Direct login must be disabled to use External Application Token auth'
+      raise ConfigValidationException(msg)