ci(testing): publish a develop-collector-omnibus testing image

.github/workflows/deploy-testing.yml

@@ -62,3 +62,25 @@ jobs:
             ${{ env.REGISTRY }}/${{ steps.image_name.outputs.value }}:develop-omnibus
           cache-from: type=gha,scope=testing-omnibus
           cache-to: type=gha,mode=max,scope=testing-omnibus
+
+      # The all-in-one image above starts its collectors from
+      # rootfs/etc/services.d, so it cannot exercise a change to any
+      # docker/entrypoint-collector*.sh script. Without this second image a
+      # collector-side fix has no testing tag at all, and a reporter has nothing
+      # to try before the next stable release.
+      #
+      # amd64 only, deliberately. This image installs zfsutils-linux, mdadm,
+      # btrfs-progs and fio, and emulating that build for arm64 under QEMU would
+      # dominate the runtime of every develop push. Stable releases still publish
+      # both architectures.
+      - name: Build and push testing collector-omnibus image
+        uses: docker/build-push-action@v7
+        with:
+          platforms: linux/amd64
+          context: .
+          file: docker/Dockerfile.collector-omnibus
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ steps.image_name.outputs.value }}:develop-collector-omnibus
+          cache-from: type=gha,scope=testing-collector-omnibus
+          cache-to: type=gha,mode=max,scope=testing-collector-omnibus

docs/DEPLOYMENTS.md

@@ -8,7 +8,7 @@ For release-version verification details, see [RELEASE_VERSION_VERIFICATION.md](
 
 | Environment | Branch | Workflow | Published Image | Notes |
 | --- | --- | --- | --- | --- |
-| Testing | `develop` | `.github/workflows/deploy-testing.yml` | `ghcr.io/starosdev/scrutiny:develop` and `develop-omnibus` | External hosts pull these tags when they want the latest testing build |
+| Testing | `develop` | `.github/workflows/deploy-testing.yml` | `ghcr.io/starosdev/scrutiny:develop`, `develop-omnibus`, and `develop-collector-omnibus` | External hosts pull these tags when they want the latest testing build. `develop-collector-omnibus` is amd64 only |
 | Beta | `beta` | `.github/workflows/deploy-beta.yml` | `ghcr.io/starosdev/scrutiny:beta` and `beta-omnibus` | External hosts pull these tags when they want a pre-release candidate ahead of stable |
 | Production | release tag | `.github/workflows/docker-build.yaml` | `ghcr.io/starosdev/scrutiny:latest` and `latest-omnibus` | External hosts pull these tags when they want the latest production build |
 
@@ -18,9 +18,13 @@ The current GHCR channel tag set is:
 
 | Channel | Tags |
 | --- | --- |
-| Stable | `latest`, `latest-omnibus`, `latest-web`, `latest-collector`, `latest-collector-zfs`, `latest-collector-mdadm`, `latest-collector-btrfs`, `latest-collector-performance` |
-| Beta | `beta`, `beta-omnibus`, `beta-web`, `beta-collector`, `beta-collector-zfs`, `beta-collector-mdadm`, `beta-collector-btrfs`, `beta-collector-performance` |
-| Testing | `develop`, `develop-omnibus`, `develop-web`, `develop-collector`, `develop-collector-zfs`, `develop-collector-mdadm`, `develop-collector-btrfs`, `develop-collector-performance` |
+| Stable | `latest`, `latest-omnibus`, `latest-web`, `latest-collector`, `latest-collector-omnibus`, `latest-collector-zfs`, `latest-collector-mdadm`, `latest-collector-btrfs`, `latest-collector-performance` |
+| Beta | `beta`, `beta-omnibus` |
+| Testing | `develop`, `develop-omnibus`, `develop-collector-omnibus` |
+
+The stable set comes from `docker/image-matrix.json`, which the release workflow
+builds in full. The beta and testing channels publish a deliberately smaller set,
+so a tag that exists for stable is not guaranteed to exist for them.
 
 The legacy `master-omnibus`, `master-web`, and `master-collector` tags still resolve in GHCR but are frozen legacy images. They are not generated by current workflows. There is no `testing` tag.
 

docs/TROUBLESHOOTING_DOCKER.md

@@ -6,7 +6,7 @@ The CI script used to orchestrate the Docker image builds lives in `.github/work
 
 Scrutiny uses two branch-backed image channels and one release-backed stable channel:
 
-- `develop` branch -> `develop` and `develop-omnibus`
+- `develop` branch -> `develop`, `develop-omnibus`, and `develop-collector-omnibus`
 - `beta` branch -> `beta` and `beta-omnibus`
 - release tag -> `latest` and `latest-omnibus`