diff --git a/README.md b/README.md
index 7b16461..e291bb7 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ Why? Because I can. And because I wanted to learn how to write a web application
  - [ ] Tests
  - [ ] Frontend using templates
  - [ ] Authentication middleware
+ - [ ] Nix flake docker image build
 
 ## Used technologies
  - [Go](https://go.dev/)
diff --git a/flake.nix b/flake.nix
index 86359c9..5df16a9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,19 +2,28 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   };
-  outputs = {nixpkgs, ...}: {
-    devShells.x86_64-linux = 
-      let 
-        pkgs = nixpkgs.legacyPackages.x86_64-linux;
-      in {
+  outputs =
+    { nixpkgs, ... }:
+    let
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+    in
+    {
+      /*
+        packages.x86_64-linux.default = pkgs.dockerTools.buildLayeredImage {
+          name = "secret-santa";
+          tag = "latest";
+        };
+      */
+      devShells.x86_64-linux = {
         default = pkgs.mkShell {
-          packages = [ 
+          packages = [
             pkgs.sqlc
-            (pkgs.callPackage ./nix/sql-migrate.nix {})
-            (pkgs.callPackage ./nix/actiongraph.nix {})
+            (pkgs.callPackage ./nix/sql-migrate.nix { })
+            (pkgs.callPackage ./nix/actiongraph.nix { })
             pkgs.sqlite
           ];
         };
       };
-  };
-}
\ No newline at end of file
+      formatter.x86_64-linux = pkgs.nixfmt-rfc-style;
+    };
+}
diff --git a/nix/actiongraph.nix b/nix/actiongraph.nix
index 51dc8c7..b3432f8 100644
--- a/nix/actiongraph.nix
+++ b/nix/actiongraph.nix
@@ -1,7 +1,8 @@
-{ stdenv
-, lib
-, buildGoModule
-, fetchFromGitHub
+{
+  stdenv,
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
 }:
 
 buildGoModule rec {
@@ -29,4 +30,4 @@ buildGoModule rec {
     description = "Go build actiongraph debug visualiser";
     license = licenses.mit;
   };
-}
\ No newline at end of file
+}
diff --git a/nix/sql-migrate.nix b/nix/sql-migrate.nix
index 5061451..c6f02c9 100644
--- a/nix/sql-migrate.nix
+++ b/nix/sql-migrate.nix
@@ -1,8 +1,9 @@
-{ stdenv
-, lib
-, buildGoModule
-, fetchFromGitHub
-, substituteAll
+{
+  stdenv,
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+  substituteAll,
 }:
 
 buildGoModule rec {
@@ -37,4 +38,4 @@ buildGoModule rec {
     description = "SQL schema migration tool for Go programs";
     license = licenses.mit;
   };
-}
\ No newline at end of file
+}