KEH-2171: Assume Service Role via SSO

[hadiqur]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

What

The IAM role for this service can now be assumed via SSO for the most secure development experience.

Testing

Have any new tests been added as part of this issue? If not, try to explain why test coverage is not needed here.

• Yes
• No
  Please write a brief description of why test coverage is not necessary here.
• Not as part of this ticket. (Could be done at a later point)

Documentation

Has any new documentation been written as part of this issue? We should try to keep documentation up to date
as new code is added, rather than leaving it for the future.

• Yes
• No
  Please write a brief description of why documentation is not necessary here.
• Not as part of this ticket. (Could be done at a later point)

Related issues

N/A

How to review

Check that instructions in updated README to run the service make sense. If you wish, you may also follow the updated instructions itself to run the service.

[github-actions]

✅⚠️MegaLinter analysis: Success with warnings

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	4		0	0	0.06s
✅ ACTION	zizmor	4		0	0	2.17s
⚠️ BASH	bash-exec	4		2	0	0.01s
✅ BASH	shellcheck	4		0	0	0.07s
✅ BASH	shfmt	4		0	0	0.0s
✅ DOCKERFILE	hadolint	1		0	0	0.04s
✅ REPOSITORY	checkov	yes		no	no	25.39s
✅ REPOSITORY	gitleaks	yes		no	no	5.3s
✅ REPOSITORY	git_diff	yes		no	no	0.01s
✅ REPOSITORY	grype	yes		no	no	44.21s
✅ REPOSITORY	osv-scanner	yes		no	no	0.46s
✅ REPOSITORY	secretlint	yes		no	no	0.85s
✅ REPOSITORY	syft	yes		no	no	1.46s
✅ REPOSITORY	trivy	yes		no	no	13.53s
✅ REPOSITORY	trivy-sbom	yes		no	no	0.3s
✅ REPOSITORY	trufflehog	yes		no	no	2.25s
✅ YAML	prettier	8		0	0	0.47s
✅ YAML	v8r	8		0	0	5.25s
✅ YAML	yamllint	8		0	0	0.6s

Detailed Issues

⚠️ BASH / bash-exec - 2 errors

Results of bash-exec linter (version 5.3.3)
See documentation on https://megalinter.io/9.5.0/descriptors/bash_bash_exec/
-----------------------------------------------

❌ [ERROR] concourse/scripts/assume_role.sh
    Error: File:[concourse/scripts/assume_role.sh] is not executable

✅ [SUCCESS] concourse/scripts/build_image.sh
✅ [SUCCESS] concourse/scripts/set_pipeline.sh
❌ [ERROR] concourse/scripts/terraform_infra.sh
    Error: File:[concourse/scripts/terraform_infra.sh] is not executable

Notices

📣 MegaLinter 9.5.0 is out! Discover the new features and security recommendations in the release announcement. (Skip this info by defining SECURITY_SUGGESTIONS: false)

See detailed reports in MegaLinter artifacts

You could have the same capabilities but better runtime performances if you use a MegaLinter flavor:

• oxsecurity/megalinter/flavors/documentation@v9.5.0 (52 linters)
• oxsecurity/megalinter/flavors/ruby@v9.5.0 (53 linters)
• oxsecurity/megalinter/flavors/rust@v9.5.0 (53 linters)

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@9.5.0 --custom-flavor-setup --custom-flavor-linters ACTION_ACTIONLINT,ACTION_ZIZMOR,BASH_EXEC,BASH_SHELLCHECK,BASH_SHFMT,DOCKERFILE_HADOLINT,REPOSITORY_CHECKOV,REPOSITORY_GIT_DIFF,REPOSITORY_GITLEAKS,REPOSITORY_GRYPE,REPOSITORY_OSV_SCANNER,REPOSITORY_SECRETLINT,REPOSITORY_SYFT,REPOSITORY_TRIVY,REPOSITORY_TRIVY_SBOM,REPOSITORY_TRUFFLEHOG,YAML_PRETTIER,YAML_YAMLLINT,YAML_V8R

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