Add a mount for preserving the buildkit cache mounts between builds.

.webhook_bridge/pipeline-build-homepage-staging.yaml

@@ -123,7 +123,7 @@ spec:
             - name: url
               value: https://code.fizz.buzz/talexander/personal_tekton_catalog.git
             - name: revision
-              value: 7ee31a185243ee6da13dcd26a592c585b64c80e5
+              value: ab59c05f093a0f86ced14bd153c18997b2ea269e
             - name: pathInRepo
               value: task/buildkit-rootless-daemonless/0.1/buildkit-rootless-daemonless.yaml
         params:
@@ -157,6 +157,8 @@ spec:
             workspace: git-source
           - name: dockerconfig
             workspace: docker-credentials
+          - name: buildkit-cache
+            workspace: buildkit-cache-workspace
         runAfter:
           - fetch-repository
     finally:
@@ -221,6 +223,7 @@ spec:
     workspaces:
       - name: git-source
       - name: docker-credentials
+      - name: buildkit-cache-workspace
   workspaces:
     - name: git-source
       volumeClaimTemplate:
@@ -235,6 +238,10 @@ spec:
     - name: docker-credentials
       secret:
         secretName: harbor-plain
+    - name: buildkit-cache-workspace
+      persistentVolumeClaim:
+        claimName: homepage-staging-buildkitd-cache
+      subPath: homepage-staging-buildkitd-cache
   params:
     - name: image-name
       value: "harbor.fizz.buzz/private/homepage-staging"

docker/server/Dockerfile

@@ -15,6 +15,7 @@ ADD https://code.fizz.buzz/talexander/organic_ast_explorer.git /organic_ast_expl
 
 FROM scratch AS organic
 ADD git@code.fizz.buzz:talexander/organic.git /organic
+RUN sleep 9999999999999