Restore readme

README.md

@@ -2,9 +2,7 @@
 
 > First, you'll need to have a reasonably modern version of `node` handy. This won't work with versions older than 9, for instance.
 
-Prerequisites: docker
-
-Install project dependencies
+Install the dependencies
 
 ```bash
 $ npm install
@@ -29,22 +27,6 @@ $ npm test
 ...
 ```
 
-## Access the updater image
-
-Create a [PAT](https://github.com/settings/tokens/new) (Personal Access Token) to pull the updater image. Check the `read:packages` permission.
-
-Export the PAT:
-
-```
-export GPR_TOKEN=_pat_with_read_packages_
-```
-
-You should now be able to run the `updater-integration.ts` test:
-
-```
-jest __tests__/updater-integration.test.ts
-```
-
 ## Change action.yml
 
 The action.yml contains defines the inputs and output for your action.