feat: Attempt to support dockerhub private images

[eikek]

/deploy

[RenkuBot]

You can access the deployment of this PR at https://renku-ci-ds-1019.dev.renku.ch

[coveralls]

Pull Request Test Coverage Report for Build 18123243513

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 70 of 101 (69.31%) changed or added relevant lines in 9 files are covered.
• 106 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.01%) to 86.702%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
components/renku_data_services/connected_services/models.py	3	4	75.0%
components/renku_data_services/connected_services/blueprints.py	8	10	80.0%
components/renku_data_services/notebooks/image_check.py	1	4	25.0%
components/renku_data_services/notebooks/api/classes/image.py	4	8	50.0%
components/renku_data_services/notebooks/core_sessions.py	2	6	33.33%
components/renku_data_services/connected_services/db.py	20	37	54.05%

Files with Coverage Reduction	New Missed Lines	%
components/renku_data_services/connected_services/db.py	1	73.48%
components/renku_data_services/notebooks/api/classes/image.py	1	84.88%
components/renku_data_services/crc/models.py	1	81.47%
components/renku_data_services/storage/blueprints.py	2	92.68%
components/renku_data_services/notebooks/image_check.py	12	38.96%
components/renku_data_services/notebooks/core_sessions.py	89	18.36%

Totals
Change from base Build 17939463871:	-0.01%
Covered Lines:	22357
Relevant Lines:	25786

---

💛 - Coveralls

[leafty]

As a general remark: I think this API endpoint should be relocated somewhere else. It should not have oauth2 in the path when this is to handle third-party platforms which DO NOT implement OAuth 2.0.

Some suggestions: /integrations/..., /non-oauth2/..., /providers/..., etc.

[eikek]

Ah yes, good point!