lint: add sqlfluff and hadolint

init.lua

@@ -167,7 +167,7 @@ local servers = {
 vim.api.nvim_create_autocmd({ "BufWritePre" }, {
 	callback = function()
 		vim.lsp.buf.format({ async = false })
-		cmd("Format")
+		cmd("FormatWriteLock")
 	end,
 })
 
@@ -199,9 +199,11 @@ lint.linters.clippy = {
 
 linters = {
 	bash = { "shellcheck" },
+	dockerfile = { "hadolint" },
 	go = { "golangcilint" },
 	python = { "flake8" },
 	rust = { "clippy" },
+	sql = { "sqlfluff" },
 	yaml = { "yamllint" },
 }
 -- set linters --