Only create release off tag if commit is on main

.github/workflows/release.yaml

@@ -17,11 +17,25 @@ name: release
 on:
   push:
     tags:
-      - 'v*'
+      - 'v[0-9]+\.[0-9]+\.[0-9]+(-build\.[0-9]+)?'
 
 jobs:
+  check-if-main:
+    runs-on: ubuntu-latest
+    outputs:
+      on_main: ${{ steps.check.outputs.on_main }}
+    steps:
+      - name: check if commit is on main
+        id: check
+        run: |
+          if [[ $(git branch --contains $(git rev-parse HEAD) | grep -E '(^|\s)main$') ]]; then
+            echo "::set-output name=on_main::true"
+          fi
+
   release:
     runs-on: ubuntu-latest
+    needs: check-if-main
+    if: needs.check-if-main.ouputs.on_main == 'true'
     permissions:
       contents: write
     env: