[wiether]

It depends on your workflow I guess, but the advantages of having a Hugo version tagged in an image:

  - sharing it easily between computers/users (docker pull registry/image:tag)
  - having the appropriate binary version embedded in your code through a docker-compose in your repo
  - having custom aliases dedicated to hugo included (build/serve/run...)
  - using the exact same image in your CI/CD
  - not "polluting" your local computer with some more stuff