You are using RedHat Linux in AWS. You have installed Docker and have a running container. You notice that "docker attach <docker ID>" commands are hanging. What do you to get inside the container?
Use "docker ps -a" to find the Docker container's name. Then use a modified version of this draft of a command:
docker exec -it docker-name bash
#Replace "docker-name" above with the name of the Docker container as found from a "docker ps -a"command.