few update

.travis/main.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -o errexit
+
+setup_dependencies() {
+    echo "INFO: Setting up dependencies."
+    sudo apt-get install git -y
+    sudo rm /usr/local/bin/docker-compose
+    curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` \
+        > docker-compose
+    chmod +x docker-compose
+    sudo mv docker-compose /usr/local/bin
+    docker-compose --version
+}
+
+update_docker_configuration() {
+    echo "INFO: Updating docker configuration."
+    echo '{
+    "experimental": true,
+    "storage-driver": "overlay2",
+    "max-concurrent-downloads": 50,
+    "max-concurrent-uploads": 50
+}' | sudo tee /etc/docker/daemon.json  
+    sudo service docker restart  
+}    
+
+main() {
+  setup_dependencies
+  update_docker_configuration
+  echo "SUCCESS: Done! Finished setting up Travis machine."
+}
+
+main