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GitHub: restrict runnable actions #2646

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7cada5b
Introduce "restrict_github_actions" property to GitHub repos configur…
AP-Hunt Aug 21, 2025
9997e31
Add "github_actions_sets" configuration to GitHub repos schema
AP-Hunt Aug 21, 2025
e601aef
Configure permitted GitHub Actions set for Platform Engineering repos…
AP-Hunt Aug 21, 2025
5ef6ce9
Configure restricted GitHub Actions for each Platform Engineering repo
AP-Hunt Aug 22, 2025
f8a066a
Configure GitHub Actions restrictions in Terraform
AP-Hunt Aug 22, 2025
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18 changes: 18 additions & 0 deletions terraform/deployments/github/main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,24 @@ resource "github_branch_protection" "govuk_repos" {
}
}

resource "github_actions_repository_permissions" "gha_permissions" {
for_each = {
for name, repo in local.repositories : name => data.github_repository.govuk["alphagov/${name}"]
if try(repo.restrict_github_actions.enabled, false) && contains(keys(data.github_repository.govuk), "alphagov/${name}")
}

repository = each.key

enabled = true
allowed_actions = "selected"

allowed_actions_config {
github_owned_allowed = true
patterns_allowed = local.repositories[each.key].restrict_github_actions.restricted_action_patterns
verified_allowed = false
}
}

#
# Only the list of repositories which will have access to a secret is created/modified
# here, the secret should have been created in the GitHub UI in advance by a
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