docker: use gitMinimal instead of git, to avoid perl in runtime closure

[WilliButz]

This change allows docker to be used on systems with the perlless profile, previously perl was pulled into the runtime closure via git when docker was enabled.
I did not find any reason for why docker would require git with PCRE support.

originally added in 08d83c1

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/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 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.

---

Result of nixpkgs-review run on x86_64-linux 1

15 packages built:

• airlift
• airlift.dist
• charliecloud
• devcontainer
• docker
• docker-gc
• docker-sbom
• docker_25
• docker_26
• fn-cli
• pipework
• python311Packages.jupyter-repo2docker
• python311Packages.jupyter-repo2docker.dist
• python312Packages.jupyter-repo2docker
• python312Packages.jupyter-repo2docker.dist

---

cc: #265640 (perlless efforts)

[WilliButz]

@ofborg test docker

[drupol]

Nice!