diff --git a/scripts/install-docker-compose.sh b/scripts/install-docker-compose.sh
index 80d870d..1490b24 100755
--- a/scripts/install-docker-compose.sh
+++ b/scripts/install-docker-compose.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-set -ev
+set -ex
 
 if [ -z "$DOCKER_COMPOSE_VERSION" ]; then
     DOCKER_COMPOSE_VERSION=1.25.4
@@ -7,7 +7,15 @@ fi
 
 echo "Installing docker-compose version: $DOCKER_COMPOSE_VERSION"
 
-sudo rm /usr/local/bin/docker-compose | echo
-curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
-sudo chmod +x docker-compose
-sudo mv docker-compose /usr/local/bin
+if [ -z "`sudo -l 2>/dev/null`" ]; then
+
+    rm /usr/local/bin/docker-compose | echo
+    curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
+    chmod +x docker-compose
+    mv docker-compose /usr/local/bin
+else
+    sudo rm /usr/local/bin/docker-compose | echo
+    curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
+    sudo chmod +x docker-compose
+    sudo mv docker-compose /usr/local/bin
+fi