add prerelease

.github/workflows/release.yml

@@ -31,7 +31,16 @@ jobs:
         run: |
           conan install . --build=missing
           conan build .
-
+      - name: Determine if prerelease
+        id: prerelease_check
+        run: |
+          TAG=${GITHUB_REF##refs/tags/}
+          if [[ "$TAG" == prerelease-* ]]; then
+            echo "true" > prerelease.txt
+          else
+            echo "false" > prerelease.txt
+          fi
+          echo "prerelease=$(cat prerelease.txt)" >> $GITHUB_OUTPUT
       - name: Archive build folder
         run: |
           ARCH=$(uname -m)
@@ -50,5 +59,5 @@ jobs:
           body: |
             Automated release based on tag ${{ github.ref_name }}
           draft: false
-          prerelease: false
+          prerelease: ${{ steps.prerelease_check.outputs.prerelease }}
           artifacts: ${{ env.TAR_NAME }}