build: build snapshots except when on a tag

.github/workflows/goreleaser.yaml

@@ -1,6 +1,7 @@
 name: goreleaser
 
 on:
+  workflow_dispatch:
   pull_request:
   push:
 
@@ -11,20 +12,20 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Checkout
+      - name: Set Vars
+        if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: echo "GORELEASER_FLAGS=--snapshot" >> $GITHUB_ENV
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      -
-        name: Set up Go
+      - name: Set up Go
         uses: actions/setup-go@v5
-      -
-        name: Run GoReleaser
+      - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:
           distribution: goreleaser
           version: '~> v2'
-          args: release --clean
+          args: release --clean ${{ env.GORELEASER_FLAGS }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}