Build a cargo test image.

We need this because the build fails missing crti.o.

.lighthouse/triggers.yaml

@@ -122,3 +122,37 @@ spec:
             value: docker/cargo_fmt/
           - name: path-to-dockerfile
             value: docker/cargo_fmt/Dockerfile
+    - name: build-cargo-test
+      agent: tekton-pipeline
+      branches:
+        - "^v[0-9]+\\.[0-9]+\\.[0-9]+$"
+      context: build-docker
+      max_concurrency: 1
+      # Override https-based url from lighthouse events.
+      clone_uri: "git@code.fizz.buzz:talexander/organic.git"
+      pipeline_run_spec:
+        serviceAccountName: build-bot
+        pipelineRef:
+          name: build-docker-pipeline
+          namespace: lighthouse
+        workspaces:
+          - name: git-source
+            volumeClaimTemplate:
+              spec:
+                storageClassName: "nfs-client"
+                accessModes:
+                  - ReadWriteOnce
+                resources:
+                  requests:
+                    storage: 10Gi
+            subPath: git-source
+          - name: docker-credentials
+            secret:
+              secretName: harbor-plain
+        params:
+          - name: image-name
+            value: "harbor.fizz.buzz/private/cargo-test"
+          - name: path-to-image-context
+            value: docker/cargo_test/
+          - name: path-to-dockerfile
+            value: docker/cargo_test/Dockerfile