chore(actions): deprecate the actions moving to dis-way/actions

[arealmaas]

Marks the reusable actions that repositories outside this one consume as deprecated. They have been duplicated into dis-way/actions under an altinn/ namespace in dis-way/actions#68.

Nothing is removed and no behaviour changes — existing workflows keep working. This is purely a signal so consumers can migrate.

Scope

Five actions have external consumers, found via GitHub code search across all repos referencing Altinn/altinn-platform/actions:

Action	External consumer repos
flux/build-push-image	8 — altinn-correspondence, dialogporten-manifests, dialogporten-frontend-manifests, altinn-dashboards-grafana, digdir/ki.norge.no, dis-demo-aalma, dis-demo-vgauk, info.altinn.no
terraform/plan	5 — info.altinn.no (×11), altinn-authorization-tmp, dd-infrastructure, altinn-authorization, digdir/dis-syncroots
terraform/apply	4 — same cluster, 16 refs
flux/verify-syncroot	3 — dis-demo-aalma, altinn-correspondence, dis-demo-vgauk
flux/retag-image	1 — altinn-correspondence

Plus the three they call internally, which have no external consumers of their own but must move for the above to work: terraform/init, terraform/write-terraform-summary, flux/setup-flux-acr.

What each deprecated action gets

• A ::warning:: annotation as its first step, naming the new location. This is what actually reaches the external repos — they won't read a README.
• A README banner. Five of them had no README, so those were created.
• An entry in the new actions/README.md, which carries the migration table and the reasoning below.

flux/setup-flux-acr gets the banner but no runtime warning: it has no direct consumers, so the annotation would only ever fire transitively and would double up the warning already emitted by flux/build-push-image and flux/retag-image. Its action.yaml is unchanged.

Four actions are not moving, and are untouched here

• terraform/plan-only and terraform/apply-only — used only by this repository's own k6tests-rg-deploy workflow. Nothing outside altinn-platform references them.
• terraform/azure-app-token — no consumers anywhere, in this repo or any other. dis-way/actions already has its own copy.
• generate-k6-manifests — its binary is not built from the sources in that folder at action runtime. It is compiled into ghcr.io/altinn/altinn-platform/k6-action-image by infrastructure/images/k6-action/Dockerfile, whose build context is this repository's root; the action's own Dockerfile only layers generate.sh on top. The generator also resolves ghcr.io/altinn/altinn-platform/k6-image as the k6 runner and reads cluster config baked into the image at /actions/generate-k6-manifests/infra/. Moving it without infrastructure/images/k6-action/ would produce a repo where editing the Go sources changes nothing at runtime — a trap rather than a migration.

Migrating a workflow

Replace the uses: path and keep the with: block unchanged:

-  uses: Altinn/altinn-platform/actions/terraform/plan@<hash>
+  uses: dis-way/actions/altinn/terraform/plan@<hash>

Caution

Do not repoint at dis-way/actions/terraform/plan (without altinn/). That is a different, independently developed action — different Azure storage account, resource group and subscription for Terraform state, and a different state-key format. Unknown inputs are only a warning in GitHub Actions, not an error, so a wrong path silently falls back to defaults and plans against an empty state. actions/README.md spells this out.

Sequencing

dis-way/actions#68 should merge first, and its internal action references bumped to the merged SHA, before anyone acts on these warnings — the dis-way/actions/altinn/... paths do not resolve until then.

Verification

• All 12 action files still parse; the four non-moving ones are byte-identical to main
• actionlint reports 0 findings under actions/
• All relative links in the new and edited READMEs resolve

🤖 Generated with Claude Code

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