feat(microokd): add bootc Containerfile

[dronenb]

Signed-off-by: Ben Dronen dronenb@users.noreply.github.com

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ DOCKERFILE	hadolint	1		0	0	0.21s
✅ REPOSITORY	dustilock	yes		no	no	0.33s
✅ REPOSITORY	git_diff	yes		no	no	0.03s
✅ REPOSITORY	secretlint	yes		no	no	1.16s
✅ REPOSITORY	syft	yes		no	no	1.84s
✅ REPOSITORY	trivy-sbom	yes		no	no	0.15s
✅ REPOSITORY	trufflehog	yes		no	no	2.5s

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