Would Dig or Dug?

Dug is the past tense and past participle of dig.

Is it dig or dug?

"Dig" is used if you are going to complete the action in the future, while "dug" is used as the past tense of the verb. Example: I am going to dig a hole tomorrow. Example: That hole was dug yesterday.

Is dug correct?

Dug is the past tense and past participle of dig.