README.md in vidar-1.9.0 vs README.md in vidar-1.9.1

@@ -35,15 +35,10 @@
     image: [docker-registry-url]:base-${CURRENT_BRANCH:?err}
     build:
       dockerfile: Dockerfile
       context: .
       target: base
-      cache_from:
-        - [docker-registry-url]:base-master
-        - [docker-registry-url]:base
-        - [docker-registry-url]:release
-        - [docker-registry-url]:$REVISION
     env_file:
       - .env
     environment:
       - RACK_ENV=test
 
@@ -53,14 +48,9 @@
       dockerfile: Dockerfile
       context: .
       target: release
       args:
         - REVISION=${REVISION:?err}
-      cache_from:
-        - [docker-registry-url]:base-${CURRENT_BRANCH:?err}
-        - [docker-registry-url]:base-master
-        - [docker-registry-url]:base
-        - [docker-registry-url]:$REVISION
 ```
 
 * `vidar.yml` file to the project root directory, which following content:
 
 ```yml