Docker | Raman's Hub

Definition

Docker is an open-source platfom used to build, test and deploy the work accorss the teams. It used to create the image with necessary libraries and run them on the containers.

Docker Hub
Docker Image
Docker Container
Docker Registry
Docker Compose

1. Installing Docker

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sudo apt update && sudo apt upgrade
sudo apt install docker.io
docker --version

2. Basic Docker Commands

Pull an image from docker hub

Docker images are templates for containers. Pull an image from Docker Hub (a public registry):

1	docker pull

1 2	docker pull <image-name> # ex: docker pull ubuntu:20.04

Run a container

Start a container from an image:

1	docker run <image-name>

To run in detached mode (in the background), use the -d flag:

1	docker run -d <image-name>

List running containers

View all running containers:

docker ps

To see all containers (including stopped ones):

1	docker ps -a

Stop a container

Stop a running container:

1	docker stop <container-id>

Remove a Container

Delete a stopped container:

1	docker rm <container-id>

Remove an Image

Delete an image:

1	docker rmi <image-name>