return {
    "jay-babu/mason-null-ls.nvim",
    event = { "BufReadPre", "BufNewFile" },
    dependencies = {
      "williamboman/mason.nvim",
      "jose-elias-alvarez/null-ls.nvim",
    },
    config = function()
        local null_ls = require("null-ls")
        local opts = {
            automatic_installation = true,
            automatic_setup = true,
            sources = {
                null_ls.builtins.formatting.prettierd,
                null_ls.builtins.diagnostics.hadolint,
            }
        }
        null_ls.setup(opts)
    end,
}