Add nvim-lint plugin

And configure Dockerfile lint

modules/home-manager/cli/neovim/default.nix

@@ -27,6 +27,7 @@ in
       extraPackages = with pkgs; [
         # LSP Servers
         clang-tools
+        hadolint
         lua-language-server
         marksman
         nil
@@ -96,6 +97,11 @@ in
          config = (builtins.readFile ./files/neotree.lua);
         }
         nui-nvim
+        {
+          plugin = nvim-lint;
+          type = "lua";
+          config = ( builtins.readFile ./files/nvim-lint.lua);
+        }
         plenary-nvim
         {
           plugin = (nvim-treesitter.withPlugins (p: [

modules/home-manager/cli/neovim/files/nvim-lint.lua

@@ -0,0 +1,9 @@
+require('lint').linters_by_ft = {
+  dockerfile = {'hadolint',}
+}
+
+vim.api.nvim_create_autocmd({ "BufWritePost" }, {
+  callback = function()
+    require("lint").try_lint()
+  end,
+})