modify format in etc files

ci-scripts/prepare-in-vm.sh

@@ -9,7 +9,7 @@ git clone --branch master http://luhan:wangarafat@git.opensource5g.org/openxg/op
 echo "successfully cloned project"
 
 sudo -i
-echo " \
+echo -e " \
 deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse \n \
 deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse \n \
 deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse \n \
@@ -25,7 +25,7 @@ sudo apt update
 cd /home/ubuntu/openxg-5gcs-release
 sudo ./scripts/install.sh -I 
 
-sudo echo "{ \n \
+sudo echo -e "{ \n \
     \"registry-mirrors\": [ \n  \
             \"https://docker.mirrors.ustc.edu.cn\" \n \
                 ] \n  \
@@ -33,4 +33,5 @@ sudo echo "{ \n \
 "  >  /etc/docker/daemon.json
 exit
 sudo service docker restart
+
 sudo docker network create docker-openxg --subnet=172.11.200.0/24 -o com.docker.network.bridge.name=docker-openxg
\ No newline at end of file