ci: only publish v releases

.github/workflows/build.yml

@@ -89,32 +89,17 @@ jobs:
   publish-release:
     runs-on: ubuntu-latest
     needs: [ publish-images ]
-    if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')
+    if: startsWith(github.ref, 'refs/tags/v')
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-        with:
-          # 0 indicates all history for all branches and tags.
-          fetch-depth: 0
-      # https://stackoverflow.com/questions/58033366/how-to-get-current-branch-within-github-actions
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
           go-version: 1.16
-      - name: Get tag
-        run: |
-          tag=$(basename $GITHUB_REF)
-          if [ $tag = "main" ]; then
-            tag="latest"
-          fi
-          echo "##[set-output name=tag;]$tag"
-        id: tag
-      - name: Generate release artifacts
-        run: make manifests changelog TAG=${{ github.tag.outputs.tag }}
-      - name: Draft release
+      - run: make manifests changelog TAG=${GITHUB_REF##*/}
+      - name: Publish release
         uses: softprops/action-gh-release@v1
         with:
-          tag_name: ${{ steps.tag.outputs.tag }}
-          prerelease: ${{ !startsWith(github.ref, 'refs/tags/') }}
+          prerelease: ${{ startsWith(github.ref, 'refs/tags/v0') || contains(github.ref, 'rc') }}
           body_path: changelog
           files: |
             config/*.yaml