modify content of docker image and tag

docker-image-modify-and-tag.sh

docker run -it --name "{containerName}" --entrypoint "/bin/bash" {imageName}
// modify your container here
// --entrypoint modifys image entrypoint. if it is defined to something else in the image you have yo change it back
docker run -it --name "{containerNameWithOriginalEP}" --entrypoint "{originalEntrypoint}" {containerName}
// now {containerNameWithOriginalEP} can be tagged and pushed