Switch "pre-release" to auto, remove obsolete changelog generation, c…

…hange event to "release: [published]" (#453)

Co-authored-by: Jerry Jackson <jerry@weave.works>

.github/workflows/release.yaml

@@ -1,9 +1,8 @@
 name: release
 
 on:
-  push:
-    tags: [ 'v*' ]
-
+  release:
+    types: [published]
 jobs:
   goreleaser:
     runs-on: ubuntu-latest
@@ -16,16 +15,6 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: 1.16.x
-      - name: Download release notes utility
-        env:
-          GH_REL_URL: https://github.com/buchanae/github-release-notes/releases/download/0.2.0/github-release-notes-linux-amd64-0.2.0.tar.gz
-        run: cd /tmp && curl -sSL ${GH_REL_URL} | tar xz && sudo mv github-release-notes /usr/local/bin/
-      - name: Generate release notes
-        run: |
-          echo 'CHANGELOG' > /tmp/release.txt
-          github-release-notes -org weaveworks -repo weave-gitops -include-author -since-latest-release >> /tmp/release.txt
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Set env var
         run: |
           make dependencies
@@ -35,7 +24,6 @@ jobs:
         uses: goreleaser/goreleaser-action@v1
         with:
           version: latest
-          args: release --release-notes=/tmp/release.txt --skip-validate
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: ${{ env.BRANCH }}

.goreleaser.yml

@@ -7,7 +7,7 @@ before:
 checksum:
   name_template: "{{ .ProjectName }}_checksums.txt"
 release:
-  prerelease: true
+  prerelease: auto
 archives:
   -
    format: binary
@@ -68,4 +68,4 @@ builds:
       - darwin
     goarch:
       - arm64
-   
+