chore(project): re-enable circle docker layer caching (#6334)

Because

* We previously used circle docker layer caching to speed up circle runs
* While migrating to the shared build cache, some confusing errors appeared
* We disabled it to see if that cleared up the issue
* Circle builds have been stable lately using the shared layer cache, but each circle run takes a significant amount of time to pull in remote images
* It's worth trying to re enable it to see if we can get both the circle caching and shared layer cache working together properly

This commit

* Re enables circle docker layer caching

.circleci/config.yml

@@ -3,6 +3,7 @@ jobs:
   check:
     machine:
       image: ubuntu-2004:202104-01 # Ubuntu 20.04, Docker v20.10.6, Docker Compose v1.29.1
+      docker_layer_caching: true
     resource_class: large
     working_directory: ~/experimenter
     steps:
@@ -22,6 +23,7 @@ jobs:
   publish_storybooks:
     machine:
       image: ubuntu-2004:202104-01 # Ubuntu 20.04, Docker v20.10.6, Docker Compose v1.29.1
+      docker_layer_caching: true
     resource_class: medium
     working_directory: ~/experimenter
     steps:
@@ -41,6 +43,7 @@ jobs:
   integration_legacy:
     machine:
       image: ubuntu-2004:202104-01 # Ubuntu 20.04, Docker v20.10.6, Docker Compose v1.29.1
+      docker_layer_caching: true
     resource_class: xlarge
     working_directory: ~/experimenter
     steps:
@@ -62,6 +65,7 @@ jobs:
   integration_nimbus:
     machine:
       image: ubuntu-2004:202104-01 # Ubuntu 20.04, Docker v20.10.6, Docker Compose v1.29.1
+      docker_layer_caching: true
     resource_class: xlarge
     working_directory: ~/experimenter
     parallelism: 5
@@ -80,6 +84,7 @@ jobs:
     working_directory: ~/experimenter
     machine:
       image: ubuntu-2004:202104-01 # Ubuntu 20.04, Docker v20.10.6, Docker Compose v1.29.1
+      docker_layer_caching: true
     steps:
       - checkout
       - deploy: