Add documentation on how to release new versions

README.md

@@ -106,6 +106,23 @@ to the docker command.
 
 ## Versioning and release process
 
+1. Create a new entry in the `.gitlab-ci.yml` file for the new version to release.
+
+    ```yaml
+    12-x-stable:
+      extends: .release
+      variables:
+        DOTENV: ".env.12-x-stable"
+    ```
+
+2. Create a new `.env.*` that corresponds to the version to release and specify the default configuration.
+
+    ```text
+    FEATURE_RUBY_REPORT 'true'
+    LM_REPORT_VERSION '2.0'
+    LM_V1_CANONICALIZE 'true'
+    ```
+
 Please check the [Release Process documentation](https://gitlab.com/gitlab-org/security-products/release/blob/master/docs/release_process.md).
 
 # Contributing