Docker Container Management Commands

Questions and Answers

What is the purpose of the docker commit command?

To start a new container from a Docker image

To list all running containers

To create a new Docker image from a container's changes (correct)

To push a Docker image to a registry

What is the purpose of the docker rm command?

To remove one or more containers (correct)

To create a new container from an image

To list all available Docker images

To stop one or more containers

What is the purpose of the docker exec command?

To start a new container from a Docker image

To run a command in a running container (correct)

To push a Docker image to a registry

To list all running containers

What is the purpose of the docker tag command?

To create a new tag for a Docker image Signup and view all the answers

What is the purpose of the docker inspect command?

To display low-level information about a container or image Signup and view all the answers

What happens when you execute the docker run command with the --rm option?

The container will be removed when it exits. Signup and view all the answers

What is the difference between docker attach and docker exec?

docker attach connects to a container's main process, while docker exec creates a new process. Signup and view all the answers

What is the purpose of the docker pause command?

To pause all processes within a container. Signup and view all the answers

What is the function of the docker cp command?

To copy files between a container and the local file system. Signup and view all the answers

Which command is used to create a new image from a container's changes?

docker commit Signup and view all the answers

What does the docker volume command manage?

Data persistence Signup and view all the answers

Which command lists all the running containers?

docker ps Signup and view all the answers

Which command allows you to view live logs from a container?

docker logs Signup and view all the answers

Which command removes unused data, such as stopped containers and dangling images?

docker prune Signup and view all the answers

Study Notes

Docker Command Purposes

The docker commit command is used to create a new image from changes made to a container.
The docker rm command is used to remove one or more containers.
The docker exec command is used to run a command in a running container.
The docker tag command is used to assign a name to an image, allowing it to be referred to by a more human-readable name.
The docker inspect command is used to return low-level information about a container or image.

Docker Run Command Options

When running the docker run command with the --rm option, the container is automatically removed when it exits.

Docker Attach and Exec

docker attach and docker exec are used to access a running container, but they differ in their behavior:
- docker attach attaches to a running container and allows you to see its output, but it does not allow you to interact with the container.
- docker exec allows you to run a command in a running container and interact with it.

Docker Pause and Cp

The docker pause command is used to pause all processes in one or more containers, allowing for temporary suspension of the container.
The docker cp command is used to copy files or folders from a container to the host machine or vice versa.

Docker Commands

Docker commit command creates a new image from a container's changes.
Docker rm command removes one or more containers.
Docker exec command runs a command in a running container.
Docker tag command creates a new reference to an image.
Docker inspect command displays low-level information on Docker objects.

Docker Run Options

Docker run command with the --rm option automatically removes the container when it exits.

Docker Interactions

Docker attach command attaches to a running container, while docker exec command runs a command in a running container.
Docker pause command pauses all processes in one or more containers.

Docker File Management

Docker cp command copies files or folders between a container and the local file system.

Docker Image Management

Docker commit command creates a new image from a container's changes.

Docker Volume Management

Docker volume command manages Docker volumes, which allow data to be shared between containers.