ci(container): build image with podman, run tests in docker (backport #1382)

[mergify]

Welcome to Cryostat! 👋

Before contributing, make sure you have:

• Read the contributing guidelines
• Linked a relevant issue which this PR resolves
• Linked any other relevant issues, PR's, or documentation, if any
• Resolved all conflicts, if any
• Rebased your branch PR on top of the latest upstream main branch
• Attached at least one of the following labels to the PR: [chore, ci, docs, feat, fix, test]
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To recreate commits with GPG signature git fetch upstream && git rebase --force --gpg-sign upstream/main

---

See #1377

Description of the change:

Last few PRs merged into main are failing after merge, but passing in PR CI.

Semi-expected after #1377, so this is an attempt to correct for that.

---

This is an automatic backport of pull request #1382 done by [Mergify](https://mergify.com).

[andrewazores]

/build_test

[github-actions]

Workflow started at 3/2/2026, 10:06:32 AM. View Actions Run.

[github-actions]

No GraphQL schema changes detected.

[github-actions]

WebSocket notifications schema change detected:

[github-actions]

OpenAPI schema change detected:

diff --git a/schema/openapi.yaml b/schema/openapi.yaml index 519350a..0cc5f88 100644 --- a/schema/openapi.yaml +++ b/schema/openapi.yaml @@ -739,21 +739,21 @@ components: info: contact: email: cryostat-development@googlegroups.com name: Cryostat Community url: https://cryostat.io description: Cloud-Native JDK Flight Recorder license: name: Apache 2.0 url: https://github.com/cryostatio/cryostat/blob/main/LICENSE title: Cryostat API - version: 4.1.1 + version: 4.1.2-snapshot openapi: 3.1.0 paths: /api/beta/diagnostics/fs/heapdumps: get: responses: "200": content: application/json: schema: items: 

[andrewazores]

/build_test

[github-actions]

Workflow started at 3/2/2026, 10:20:39 AM. View Actions Run.

[andrewazores]

/build_test

[github-actions]

CI build and push: At least one test failed ❌
https://github.com/cryostatio/cryostat/actions/runs/22582523558

[github-actions]

CI build and push: At least one test failed ❌
https://github.com/cryostatio/cryostat/actions/runs/22581938235

[github-actions]

Workflow started at 3/2/2026, 10:22:33 AM. View Actions Run.

[github-actions]

No OpenAPI schema changes detected.

[github-actions]

No GraphQL schema changes detected.

[github-actions]

WebSocket notifications schema change detected:

[github-actions]

CI build and push: All tests pass ✅
https://github.com/cryostatio/cryostat/actions/runs/22582600375