The centos dockerfile has a default command bash. That means, when run in background (-d), the shell exits immediately. Update 2017 More recent versions of docker authorize to run a container both in detached mode and in foreground mode (-t, -i or -it) In that case, you don’t need any additional command and this is … Read more
In order to copy a file from a container to the host, you can use the command Here’s an example: Here goofy_roentgen is the container name I got from the following command: You can also use (part of) the Container ID. The following command is equivalent to the first
An instance of an image is called a container. You have an image, which is a set of layers as you describe. If you start this image, you have a running container of this image. You can have many running containers of the same image. You can see all your images with docker images whereas you can … Read more
docker attach will let you connect to your Docker container, but this isn’t really the same thing as ssh. If your container is running a webserver, for example, docker attach will probably connect you to the stdout of the web server process. It won’t necessarily give you a shell. The docker exec command is probably what you are looking for; this will let … Read more
The cp command can be used to copy files. One specific file can be copied TO the container like: One specific file can be copied FROM the container like: For emphasis, container_id is a container ID, not an image ID. (Use docker ps to view listing which includes container_ids.) Multiple files contained by the folder … Read more