ADD: build into a cache volume

.drone.yml

@@ -2,12 +2,19 @@ kind: pipeline
 type: kubernetes
 name: default-build
 
+workspace:
+  path: /cache
+
 volumes:
 - name: fedhq-ca-crt
   config_map:
     name: fedhq-ca-crt
     default_mode: 420     # same as 644 in octal, or u+w,a+r
     optional: false
+- name: cache
+  claim:
+    name: federationhq-drone-cache-pvc
+    read_only: false 
 
 steps:
   - name: Build Image
@@ -16,6 +23,8 @@ steps:
     volumes:
     - name: fedhq-ca-crt
       path: /etc/ssl/certs2/
+    - name: cache
+      path: /cache
     settings:
       dockerfile: Dockerfile
       pullfirst: true