Use explicit check for version instead of variable substitution

Author: gavlyukovskiy

.github/workflows/on-release-tag.yaml

@@ -43,6 +43,11 @@ jobs:
       - name: Build
         env:
           DOCKER_PUSH: true
-        run: ./gradlew \
-          -Pversion=${"${{ github.event.inputs.version }}":-${GITHUB_REF_NAME#v}} \
-          bootBuildImage
+        run: |
+          # Determine version from tag or input
+          VERSION="${{ github.event.inputs.version || '' }}"
+          if [ -z "$VERSION" ]; then
+            VERSION="${GITHUB_REF_NAME#v}"
+          fi
+
+          ./gradlew -Pversion=$VERSION bootBuildImage