dockerTools: Replace bashInteractive with bash

[jhol]

bash has been interactive by default since this PR was merged. This commit simplifies dockerTools given that there is now no distinction between bash and bashInteractive.

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• Tested, as applicable:
  • NixOS tests in nixos/tests.
  • Package tests at passthru.tests.
  • Tests in lib/tests or pkgs/test for functions and "core" functionality.
• Ran nixpkgs-review on this PR. See nixpkgs-review usage.
• Tested basic functionality of all binary files, usually in ./result/bin/.
• Nixpkgs Release Notes
  • Package update: when the change is major or breaking.
• NixOS Release Notes
  • Module addition: when adding a new NixOS module.
  • Module update: when the change is significant.
• Fits CONTRIBUTING.md, pkgs/README.md, maintainers/README.md and other READMEs.

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[smancill]

I don't know how to retrigger the failed build checks.

[commiterate]

Not seeing the usual buttons on the jobs in the Checks tab either (I think job failures were due to the AWS us-east-1 outage). Not sure if we're missing permissions or something.

[jhol]

I don't see buttons either. Never mind. I just re-pushed the branch with a trivial mod.

[jhol]

@roberth would you be able to take a look at this? This PR and #453923 are part of an effort to break #387173 into manageable atomic commits.

The remaining commits are blocked by these PRs.

I hoped that dividing the work into smaller PRs would make it easier to get these changes reviewed, but it seems this approach has also stalled. Please let me know if there's anything I can do to help get these changes through the review process.