Migrate neovim config to lua

.config/nvim/lua/lsp/docker-ls.lua

@@ -0,0 +1,6 @@
+-- npm install -g dockerfile-language-server-nodejs
+require'lspconfig'.dockerls.setup {
+    cmd = {DATA_PATH .. "/lspinstall/dockerfile/node_modules/.bin/docker-langserver", "--stdio"},
+    on_attach = require'lsp'.common_on_attach,
+	root_dir = vim.loop.cwd
+}