🌱 Update CONTAINER_TOOL evaluation in makefile to warn instead of error

[everettraven]

when unable to find docker or podman as this evaluation results in an error in environments where docker or podman is not installed even when using targets that do not require a container runtime

Description

• Updates the CONTAINER_TOOL evaluation logic to warn instead of error out when docker or podman are not detected in the path. This makes it so that in environments where neither is installed, running targets that don't require a container runtime can still be run. A caveat is that the targets needing a container runtime will still attempt to run and fail. I believe issuing a warning is a good middle ground to provide a clear reason why a target that requires a container runtime would fail, but am open to suggestions on better ways to approach this.

Reviewer Checklist

• [ ] API Go Documentation
• [ ] Tests: Unit Tests (and E2E Tests, if appropriate)
• [ ] Comprehensive Commit Messages
• [ ] Links to related GitHub Issue(s)

[netlify[bot]]

✅ Deploy Preview for olmv1 ready!

Name	Link
🔨 Latest commit	5130e9064c3ce60a2bf9fe4731bf5c953578eafa
🔍 Latest deploy log	https://app.netlify.com/sites/olmv1/deploys/664262001d668700087ea28f
😎 Deploy Preview	https://deploy-preview-852--olmv1.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.02%. Comparing base (8e039f3) to head (5130e90).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #852 +/- ## ======================================= Coverage 71.02% 71.02% ======================================= Files 17 17 Lines 1301 1301 ======================================= Hits 924 924 Misses 304 304 Partials 73 73 ``` | [Flag](https://app.codecov.io/gh/operator-framework/operator-controller/pull/852/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=operator-framework) | Coverage Δ | | |---|---|---| | [e2e](https://app.codecov.io/gh/operator-framework/operator-controller/pull/852/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=operator-framework) | `43.96% <ø> (ø)` | | | [unit](https://app.codecov.io/gh/operator-framework/operator-controller/pull/852/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=operator-framework) | `63.59% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=operator-framework#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.