I would recommend using the official Haskell Docker image instead: https://hub.docker.com/_/haskell

A Haskell development container for GitHub Codespaces.

You can use this container by putting this in your .devcontainer.json file:

{
  "image": "ghcr.io/tfausak/haskell-codespace:ghc-9.2",
  "postCreateCommand": "cabal update"
}

The postCreateCommand is not required, but it is recommended.

This image includes the following tools:

• GHCup
• GHC
• Cabal
• HLint
• Brittany