What are docker basic commands?
As we have learned in the previous article about docker installation. Now we will learn how to use basic docker commands.
1. Find Docker Version
To find the installed docker version, run the following command.
2. Download Docker Image
To download the docker image, run the below command.
$ docker pull <image_name>
3. List Downloaded Docker Images
To list the downloaded images on the system, run below command.
4. Launch Container
To launch a container, use the following command. For example, here we will run the Apache server within the container.
$ docker run
-it -d httpd
5. List Running Containers
To list all the running containers, run the following command.
$ docker ps
We can use -a option to check all the stopped/shutdown containers.
$ docker ps -a
6. Remove Container
Run the following command to remove a container. For that, we need container id. We can get container id using docker ps command.
docker rm 8v5251d3b6b9
7. Restart Docker container
Run the following command to restart the docker container.
$ docker restart 83dag5sqn4ePw
Stop docker container:
$ docker stop 83dag5sqn4ePw
To start docker container:
$ docker start 83dag5sqn4ePw
8. Kill Docker container
We can use the following docker command to kill the container immediately.
$ docker kill 83dag5sqn4ePw
9. Docker Info
To get overview of installed services on docker, run the following command. It will tell us about how many containers running, stopped, images etc.
$ docker info
10. Copy File
To copy a file from a docker container to the local system, run the below command. In this example, we will copy the index.php file.
$ docker cp 83dag5sqn4ePw:/usr/local/apache2/index.php /home/arun/
where cp = copy command
83dag5sqn4ePw = container id
11. Search docker image
Run the following command to search docker images.
$ docker search ubuntu
That’s it. Hope you have learned the basic docker commands.