224 lines
7.6 KiB
Markdown
224 lines
7.6 KiB
Markdown
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# Install Docker-ce
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How do I install Docker CE on Debian 11/10?, How can I install Docker Compose on Debian 11/10 Linux system?. In this guide, I'll discuss a step by step installation of Docker and Docker Compose on Debian 11/10.
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Docker is the most popular and widely used container runtime. It enables you to package and run your applications in isolated containers in a single server or cluster of Linux servers orchestrated by Kubernetes and similar tools.
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## Docker Editions
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There are two editions of Docker available.
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- **Community Edition (CE)**: ideal for individual developers and small teams looking to get started with Docker and experimenting with container-based apps.
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- **Enterprise Edition (EE)**: Designed for enterprise development and IT teams who build, ship, and run business-critical applications in production at scale.
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This guide will cover installation of Docker CE on Debian 10 / Debian 11 Linux. But let's first look at common docker terminologies.
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## Docker Components / Terminologies
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Below are commonly used terminologies in Docker ecosystem.
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- **Docker daemon**: This is also called Docker Engine, it is a background process which runs on the host system responsible for building and running of containers.
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- **Docker Client**: This is a command line tool used by the user to interact with the Docker daemon.
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- **Docker Image**: An image is an immutable file that's essentially a snapshot of a container. A docker image has a file system and application dependencies required for running applications.
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- **Docker container**: This is a running instance of a docker image with an application and its dependencies. Each container has a unique process ID and isolated from other containers. The only thing containers share is the Kernel.
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- **Docker registry**: This is an application responsible for managing storage and delivery of Docker container images. It can be private or public.
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# Install Docker CE on Debian 11 (Bullseye) / Debian 10 (Buster)
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Follow the steps covered in the next parts of this article to install and use Docker CE on Debian 11/10.
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## Step 1: Install Dependency packages
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Start the installation by ensuring that all the packages used by docker as dependencies are installed.
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```
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sudo apt update
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sudo apt -y install apt-transport-https ca-certificates curl gnupg2 software-properties-common
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```
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## Step 2: Add Docker's official GPG key:
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Import Docker GPG key used for signing Docker packages.
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```
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curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg
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```
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## Step 3: Add the Docker repository to Debian 10 / Debian 11
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Add Docker repository which contain the latest stable releases of Docker CE.
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```
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sudo add-apt-repository\
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"deb [arch=amd64] https://download.docker.com/linux/debian\
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$(lsb_release -cs)\
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stable"
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```
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This command will add the line shown in `/etc/apt/sources.list` file.
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## Step 4: Install Docker & Docker Compose on Debian 11/10
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Update the `apt` package index.
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```
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sudo apt update
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```
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To install Docker CE on Debian, run the command:
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```
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sudo apt install docker-ce docker-ce-cli containerd.io -y
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```
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Start and enable docker service:
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```
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sudo systemctl enable --now docker
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```
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This installation will add `docker` group to the system without any users. Add your user account to the group to run docker commands as non-privileged user.
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```
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sudo usermod -aG docker $USER
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newgrp docker
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```
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Check docker and compose version.
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```
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$ docker version
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Client: Docker Engine - Community
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Version: 20.10.17
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API version: 1.41
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Go version: go1.17.11
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Git commit: 100c701
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Built: Mon Jun 6 23:03:17 2022
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OS/Arch: linux/amd64
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Context: default
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Experimental: true
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Server: Docker Engine - Community
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Engine:
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Version: 20.10.17
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API version: 1.41 (minimum version 1.12)
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Go version: go1.17.11
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Git commit: a89b842
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Built: Mon Jun 6 23:01:23 2022
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OS/Arch: linux/amd64
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Experimental: false
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containerd:
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Version: 1.6.6
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GitCommit: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
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runc:
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Version: 1.1.2
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GitCommit: v1.1.2-0-ga916309
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docker-init:
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Version: 0.19.0
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GitCommit: de40ad0
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```
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Log out and log back in so that your group membership is re-evaluated.
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```
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exit
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```
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### Install Docker Compose on Debian
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Use the guide below to install latest Docker Compose on Debian 10 / Debian 11
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- [How To Install Latest Docker Compose on Linux](https://computingforgeeks.com/how-to-install-latest-docker-compose-on-linux/)
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## Step 5: Test Docker installation
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Run a test docker container:
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```
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$ docker run --rm -it --name test alpine:latest /bin/sh
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latest: Pulling from library/alpine
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2408cc74d12b: Pull complete
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Digest: sha256:686d8c9dfa6f3ccfc8230bc3178d23f84eeaf7e457f36f271ab1acc53015037c
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Status: Downloaded newer image for alpine:latest
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/ # cat /etc/os-release
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NAME="Alpine Linux"
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ID=alpine
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VERSION_ID=3.16.0
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PRETTY_NAME="Alpine Linux v3.16"
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HOME_URL="https://alpinelinux.org/"
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BUG_REPORT_URL="https://gitlab.alpinelinux.org/alpine/aports/-/issues"
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/ # exit
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```
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## Step 6: Test Docker Compose installation.
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Create a test Docker Compose file.
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```
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vim docker-compose.yml
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```
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Add below data to the file.
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```
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version: '3'
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services:
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web:
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image: nginx:latest
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ports:
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- "8080:80"
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links:
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- php
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php:
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image: php:7-fpm
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```
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Start service containers.
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```
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$ docker-compose up -d
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```
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Output:
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Show running Containers
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```
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$ docker-compose ps
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```
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Destroy containers
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```
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$ docker-compose stop
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$ docker-compose rm
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Going to remove vagrant_web_1, vagrant_php_1
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Are you sure? [yN] y
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Removing vagrant_web_1 ... done
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Removing vagrant_php_1 ... done
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```
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You have successfully installed Docker on Debian 10 / Debian 11 Linux. Go through Official[ Docker documentation](https://docs.docker.com/) and [Docker Compose documentation](https://docs.docker.com/compose/) to learn more.
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## Setup Docker UI (Optional)
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If you need a UI management console for Docker hosts and containers, checkout Portainer.
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- [How to Install Portainer Docker UI manager](https://computingforgeeks.com/install-docker-ui-manager-portainer/)
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## Monitoring Docker containers
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Monitoring Docker containers can be achieved by using Monitoring tools such as [Netdata, Prometheus and Grafana](https://computingforgeeks.com/category/monitoring/). Below guide should also be helpful [Check Container container metrics with Ctop.](https://computingforgeeks.com/top-command-for-container-metrics/)
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### Best Docker Learning Courses:
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- [Docker Mastery: with Kubernetes +Swarm from a Docker Captain](https://click.linksynergy.com/deeplink?id=2sb89XJC/EQ&mid=39197&murl=https%3A%2F%2Fwww.udemy.com%2Fcourse%2Fdocker-mastery%2F)
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- [Docker for the Absolute Beginner -- Hands On -- DevOps](https://click.linksynergy.com/deeplink?id=2sb89XJC/EQ&mid=39197&murl=https%3A%2F%2Fwww.udemy.com%2Fcourse%2Flearn-docker%2F)
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- [Docker and Kubernetes: The Complete Guide](https://click.linksynergy.com/deeplink?id=2sb89XJC/EQ&mid=39197&murl=https%3A%2F%2Fwww.udemy.com%2Fcourse%2Fdocker-and-kubernetes-the-complete-guide%2F)
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- [Docker -- SWARM -- Hands-on -- DevOps](https://click.linksynergy.com/deeplink?id=2sb89XJC/EQ&mid=39197&murl=https%3A%2F%2Fwww.udemy.com%2Fcourse%2Flearn-docker-advanced%2F)
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- [Docker Swarm Mastery: DevOps Style Cluster Orchestration](https://click.linksynergy.com/deeplink?id=2sb89XJC/EQ&mid=39197&murl=https%3A%2F%2Fwww.udemy.com%2Fcourse%2Fdocker-swarm-mastery%2F)
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