Update devcontainer setup and use GHCR to host the image

[MarekPikula]

No description provided.

[github-actions]

Pull Request Test Coverage Report for Build 5118820928

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 88.889%

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Totals
Change from base Build 5118742736:	0.0%
Covered Lines:	136
Relevant Lines:	153

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💛 - Coveralls

[github-actions]

Pull Request Test Coverage Report for Build 5130970882

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 88.889%

---

Totals
Change from base Build 5118742736:	0.0%
Covered Lines:	136
Relevant Lines:	153

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 5118830931

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.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 89.103%

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Totals
Change from base Build 5118742736:	0.2%
Covered Lines:	139
Relevant Lines:	156

---

💛 - Coveralls