diff --git a/nixos/modules/services/misc/docker-registry.nix b/nixos/modules/services/misc/docker-registry.nix
index a2764abd993e..93bf71ea3ecc 100644
--- a/nixos/modules/services/misc/docker-registry.nix
+++ b/nixos/modules/services/misc/docker-registry.nix
@@ -41,8 +41,7 @@ let
     };
   };
 
-  configFile = pkgs.writeText "docker-registry-config.yml" (builtins.toJSON (recursiveUpdate registryConfig cfg.extraConfig));
-
+  configFile = cfg.configFile;
 in {
   options.services.dockerRegistry = {
     enable = mkEnableOption "Docker Registry";
@@ -106,6 +105,17 @@ in {
       type = types.attrs;
     };
 
+    configFile = lib.mkOption {
+      default = pkgs.writeText "docker-registry-config.yml" (builtins.toJSON (recursiveUpdate registryConfig cfg.extraConfig));
+      defaultText = literalExpression ''pkgs.writeText "docker-registry-config.yml" "# my custom docker-registry-config.yml ..."'';
+      description = ''
+       Path to CNCF distribution config file.
+
+       Setting this option will override any configuration applied by the extraConfig option.
+      '';
+      type =  types.path;
+    };
+
     enableGarbageCollect = mkEnableOption "garbage collect";
 
     garbageCollectDates = mkOption {
diff --git a/nixos/tests/docker-registry.nix b/nixos/tests/docker-registry.nix
index 3969ef3f0226..4f033fc30b19 100644
--- a/nixos/tests/docker-registry.nix
+++ b/nixos/tests/docker-registry.nix
@@ -3,7 +3,7 @@
 import ./make-test-python.nix ({ pkgs, ...} : {
   name = "docker-registry";
   meta = with pkgs.lib.maintainers; {
-    maintainers = [ globin ironpinguin ];
+    maintainers = [ globin ironpinguin cafkafk ];
   };
 
   nodes = {