Document release process for major and minor versions

RELEASE.md

@@ -1,9 +1,68 @@
 # Release Process
 
-The Kubernetes Template Project is released on an as-needed basis. The process is as follows:
+## Releasing a major or minor version
 
-1. An issue is proposing a new release with a changelog since the last release
-1. All [OWNERS](OWNERS) must LGTM this release
-1. An OWNER runs `git tag -s $VERSION` and inserts the changelog and pushes the tag with `git push $VERSION`
-1. The release issue is closed
-1. An announcement email is sent to `[email protected]` with the subject `[ANNOUNCE] kubernetes-template-project $VERSION is released`
+**Prerequisites:**
+
+* Install goreleaser:
+    ```bash
+    go install github.com/goreleaser/goreleaser@latest
+    ```
+**Steps:**
+
+1. Determine the release version:
+
+    -  Identify the `MAJOR`, `MINOR`, and `PATCH` version numbers for the release. 
+    -  For example:
+        ```bash
+        MAJOR="1"
+        MINOR="2"
+        PATCH="3" 
+        ```
+
+2. Create a release branch:
+
+
+    - Create a release branch using the format `release-${MAJOR}.${MINOR}`:
+
+        ```bash
+        git checkout -b release-${MAJOR}.${MINOR}
+        ```
+
+    - Push the release branch to the upstream repository:
+
+        ```bash
+        git push upstream release-${MAJOR}.${MINOR} 
+        ```
+
+3. Create and push a tag:
+
+    - Create a new tag using the format `v${MAJOR}.${MINOR}.${PATCH}`:
+
+        ```bash
+        git tag v${MAJOR}.${MINOR}.${PATCH}
+        ```
+
+    - Push the release branch to the upstream repository:
+
+        ```bash
+        git push upstream v${MAJOR}.${MINOR}.${PATCH}
+        ```
+
+4. Build release artifacts:
+
+    - Use `goreleaser` to build the release artifacts:
+
+        ```bash
+        goreleaser release --clean --skip-publish 
+        ```
+
+        This command generates the release artifacts in the `dist` directory.
+
+5. **Create a GitHub release:**
+
+    - Go to the project's GitHub repository and navigate to the [New Releases
+      page](https://github.com/kubernetes-sigs/gwctl/releases/new).
+    - Select the newly created tag (`v${MAJOR}.${MINOR}.${PATCH}`) from the "Choose a tag" dropdown.
+    - Attach the relevant release artifacts (`.tar.gz` and `.zip` files) from the `dist` directory.
+    - Publish the release.