fix rule for building tagged releases (#189)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7601fc9..6bd227b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -105,4 +105,4 @@
           elif [ ${RUNTIME_VERSION} == "actionloop" ]; then
             RUNTIME="actionloop"
           fi
-          ./gradlew :core:$RUNTIME:distDocker -PdockerRegistry=docker.io -PdockerImagePrefix=openwhisk -PdockerImageTag=$IMAGE_TAG
+          ./gradlew $RUNTIME:distDocker -PdockerRegistry=docker.io -PdockerImagePrefix=openwhisk -PdockerImageTag=$IMAGE_TAG