Docker command

Docker engine includes Docker CLI, which provides command line tools for interacting with Docker daemon. This tutorial introduces the usage of common Docker commands.

1. View detailed information

docker info

docker info

2. View the version number

docker --version

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docker --version

3. Pull the image

docker pull <image_name>

If no tag is specified, the image with the latest tag will be pulled by default.

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docker pull hello-world

docker pull <image_name>:

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docker pull ubuntu:18.04

4. Run the image

If there is no image to be run locally, docker will automatically pull the corresponding image.

docker run <image_name>

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docker run hello-world

docker pull <image_name>:

Start the specified container and exit:

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docker run ubuntu:18.04

Start the specified container in interactive mode: Enter exit to exit

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docker run -it ubuntu:18.04 /bin/bash

4.1. View the running image

docker ps

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docker ps

4.2. View the running or stopped image

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docker ps -a

5. Clean up images

docker container prune

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docker container prune

6. View local images

docker images

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docker images

7. Delete images

Note: The image to be deleted needs to be stopped and cleaned up

docker rmi <image_name>

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docker rmi hello-world

docker rmi <image_name>:

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docker rmi ubuntu:18.04

8. Submit the image

Pull and run the ubuntu:18.04 image in interactive mode

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docker run -it ubuntu:18.04 /bin/bash

docker commit <image_name>:

Note: Modify according to the actual CONTAINER ID

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docker commit 2efca1aa1bb1 ubuntu_18.04:1.0.0

9. Stop the image

If you run the container in interactive mode and the terminal enters the container, you can enter exit in the container to stop the container;

If you close the container externally, you can use the docker stop command.

docker stop

Note: Modify according to the actual CONTAINER ID

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docker stop 2efca1aa1bb1

10. Multiple terminals enter the same container

Containers are isolated from each other. Directly using the command to run the image will start different containers; if you need to perform operations in the same container, you need to use the command to enter the same container.

Run the ubuntu:18.04 image in interactive mode:

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docker run -it ubuntu:18.04 /bin/bash

View the running container:

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docker ps

docker exec

Enter the running container in interactive mode: modify according to the actual CONTAINER ID

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docker exec -it bc4fcf3ef267 /bin/bash