feat(lang): add docker support (#1078)

lua/lazyvim/plugins/extras/lang/docker.lua

@@ -0,0 +1,36 @@
+return {
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = function(_, opts)
+      if type(opts.ensure_installed) == "table" then
+        vim.list_extend(opts.ensure_installed, { "dockerfile" })
+      end
+    end,
+  },
+  {
+    "jose-elias-alvarez/null-ls.nvim",
+    opts = function(_, opts)
+      local nls = require("null-ls")
+      opts.sources = opts.sources or {}
+      vim.list_extend(opts.sources, {
+        nls.builtins.diagnostics.hadolint,
+      })
+    end,
+    dependencies = {
+      "mason.nvim",
+      opts = function(_, opts)
+        opts.ensure_installed = opts.ensure_installed or {}
+        vim.list_extend(opts.ensure_installed, { "hadolint" })
+      end,
+    },
+  },
+  {
+    "neovim/nvim-lspconfig",
+    opts = {
+      servers = {
+        dockerls = {},
+        docker_compose_language_service = {},
+      },
+    },
+  },
+}