deployment automation in AWS servers

Deployment script which have to run on remote aws linux machines. But i got problem while tomcat start, here is the code and error

1.sh /var/lib/apache-tomcat-7.0.55/bin/shutdown.sh

2.scp -i /tmp/Keys/*****.pem fedora@...*:/opt/artifacts/appedo.war /var/lib/apache-tomcat-7.0.55/webapps

3.sh /var/lib/apache-tomcat-7.0.55/bin/startup.sh

To run on remote linux machine: ssh username@...* 'bash -s' < /opt/scripts/deploytest.sh

1&2 working fine. While running 3rd, error came like this touch: cannot touch ‘/var/lib/apache-tomcat-7.0.55/logs/catalina.out’: Permission denied /var/lib/apache-tomcat-7.0.55/bin/catalina.sh: line 387: /var/lib/apache-tomcat-7.0.55/logs/catalina.out: Permission denied

Please share me your thoughts.... (one way is giving full permissions to catalina.out will solve the issue but as for our needs it has to have 644 permissions only)