docker-compose: fix rm command argument

[leoperegrino]

This PR aims to fix a minor argument error in the docker compose derivation. Also discussed here #196654 (comment).

As you can see in the compose file tree here for this tag e2e package is actually under the pkg directory, meaning: pkg/e2e.

Using rm -rf e2e/ is a silent error: the code will try to remove a nonexistent directory. In this case the build only passes because doCheck = false even though there is a directory pkg/e2e. If one wants to perform the tests and set it to true this will fail due to the e2e package.

To test:

1. set doCheck = true
2. build and fail
3. set rm -rf pkg/e2e/ in postPatch
4. build and succeed

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[drupol]

Hello,

Thanks for your first PR against the Nixpkgs repository !

The diff LGTM, going to approve this now.

Keep PRs coming :)