Fix release detection [release] [v3.0]

action.yml

@@ -440,18 +440,18 @@ runs:
         elif [[ $METRICS_SOURCE == "lowlighter" ]]; then
           # Is unreleased version
           set +e
-          METRICS_IS_UNRELEASED=$(expr $(expr match $METRICS_VERSION .*-beta) == 0)
+          METRICS_IS_RELEASED=$(expr $(expr match $METRICS_VERSION .*-beta) == 0)
           set -e
-          echo "Unreleased: $METRICS_IS_UNRELEASED"
+          echo "Unreleased: $METRICS_IS_RELEASED"
           # Rebuild image for unreleased version
-          if [[ $METRICS_IS_UNRELEASED ]]; then
+          if [[ $METRICS_IS_RELEASED ]]; then
+            echo "Using released version $METRICS_TAG, will pull docker image from GitHub registry"
+            METRICS_IMAGE=ghcr.io/lowlighter/metrics:$METRICS_TAG
+          # Use registry for released version
+          else
             echo "Using an unreleased version, rebuilding docker image from Dockerfile"
             docker build -t metrics:unreleased .
             METRICS_IMAGE=metrics:unreleased
-          # Use registry for released version
-          else
-            echo "Using released version $METRICS_TAG, will pull docker image from GitHub registry"
-            METRICS_IMAGE=ghcr.io/lowlighter/metrics:$METRICS_TAG
           fi
         # Forked action
         else