Rename file in docker container

In your Dockerfile: ADD fileA fileB. That will rename fileA to fileB at the moment of image creation.

You can split your command in 2 commands :

cp /usr/local/tomcat/webapps/app.war /usr/local/tomcat/webapps/client1.warrm /usr/local/tomcat/webapps/app.war

linux docker redhat

you can edit file inside container and commit changes without buiding image.

docker commit existing_containername commited_image_name

then run container with new for example

docker run --name tomcat -td commited_image_name

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