chore: fix cache key to include CIRCLE_TAG

ensuring workflow steps read artifacts from the right place

Author: pjenvey

.circleci/config.yml

@@ -197,7 +197,7 @@ jobs:
     steps:
       - setup_remote_docker
       - restore_cache:
-          key: v1-{{.Branch}}
+          key: v1-{{ .Branch }}-{{ .Environment.CIRCLE_TAG }}
       - run:
           name: Restore Docker image cache
           command: docker load -i /home/circleci/cache/docker.tar
@@ -212,7 +212,7 @@ jobs:
     steps:
       - setup_remote_docker
       - restore_cache:
-          key: v1-{{.Branch}}
+          key: v1-{{ .Branch }}-{{ .Environment.CIRCLE_TAG }}
       - run:
           name: Restore Docker image cache
           command: docker load -i /home/circleci/cache/docker.tar