diff --git a/entrypoint.sh b/entrypoint.sh
index cc2f4eb..0899a4c 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -8,6 +8,9 @@ if [ ! -z $INPUT_DOCKER_NETWORK ];
 then INPUT_OPTIONS="$INPUT_OPTIONS --network $INPUT_DOCKER_NETWORK"
 fi
 
-then echo "loading image from $INPUT_TARBALL"; docker load --input $INPUT_TARBALL
+if [ ! -z $INPUT_TARBALL ];
+then echo "loading image from $INPUT_TARBALL"
+    docker load --input $INPUT_TARBALL
+fi
 
 exec docker run -v "/var/run/docker.sock":"/var/run/docker.sock" $INPUT_OPTIONS --entrypoint=$INPUT_SHELL $INPUT_IMAGE -c "${INPUT_RUN//$'\n'/;}"