Do not use constraints from bazel_tools

[limdor]

🐞 bug report

Affected Rule

Any that use constraints from bazel_tools

Is this a regression?

No

Description

Constraints from bazel_tools should not be used, instead the ones from https://github.com/bazelbuild/platforms should be used. In Bazel 5.0 this will be flipped and already now to prepare the migration to Bazel 5.0 someone depending on rules_docker cannot flip the flag because rules_docker still uses bazel_tools.
More info in: bazelbuild/bazel#8622

🔬 Minimal Reproduction

Build something with the flag --incompatible_use_platforms_repo_for_constraints

🔥 Exception or Error

invalid registered toolchain '@io_bazel_rules_docker//toolchains/docker:default_linux_toolchain': Analysis of target '@bazel_tools//platforms:linux' failed

🌍 Your Environment

Operating System:

Linux

Output of bazel version:

5.0.0rc1 without he incompatible flag
4.0.0 with incompatible flag

Rules_docker version:

0.19