(setq-default
 sh-basic-offset 2
 sh-indentation 2)

(use-package sh-script
  :ensure t
  :init
  (progn
    (dolist (pattern '("\\.bash_local\\'"
                       "\\.bash_profile\\'"
                       "\\.bash_login\\'"
                       "\\.bash_logout\\'"
                       "\\.bashrc\\'"))
        (add-to-list 'auto-mode-alist (cons pattern 'sh-mode)))))