ci: enable tag command

Author: foosel

.github/workflows/build.yml

@@ -97,5 +97,4 @@ jobs:
         run: |
           TAGS=$(echo "$DOCKER_METADATA_OUTPUT_JSON" | jq -r '.tags | to_entries | map("--tag " + (.value | tostring)) | join(" ")')
 
-          echo "Would run: docker buildx imagetools create $TAGS $DOCKER_IMAGE:$TEST_TAG"
-            
+          docker buildx imagetools create $TAGS $DOCKER_IMAGE:$TEST_TAG