Docker

Docker is an open-source platform that allows you to automate the deployment, scaling, and management of applications by packaging them into lightweight, portable containers.

How to install docker and docker-compose on Linux:

Update apt:

sudo apt update && upgrade -y

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Only Docker

Install docker.io:

sudo apt install docker.io -y

Test docker:

sudo docker run --name web -itd -p 8080:80 nginx

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Alternative

Install docker.io with docker-compose:

sudo apt install docker.io docker-compose -y

Test docker-compose

Create a folder:

mkdir docker-test && cd docker-test

Create and edit a docker-compose.yaml file:

nano docker-compose.yaml

Add this to the yaml file:

version: "3"
services:
  website:
    image: nginx
    ports:
      - "8081:80"
    restart: always

Run docker compose from folder:

sudo docker-compose up -d

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Check if docker container is running:

sudo docker ps

Or for only docker compose containers:

sudo docker-compose ps