Schéma synthétisant le fonctionnement de Docker
(source krammark23 sur Youtube)
Documentation et références
Installation et configuration de Docker CE
Installation des pré-requis :
# apt-get update # apt-get install apt-transport-https ca-certificates curl software-properties-common
Ajout du dépôt Docker et de sa clef GPG :
# curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add - OK # echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee -a /etc/apt/sources.list.d/docker.list deb [arch=amd64] https://download.docker.com/linux/debian stretch stable # apt-get update [...] Réception de:5 https://download.docker.com/linux/debian stretch InRelease [39,1 kB] Réception de:7 https://download.docker.com/linux/debian stretch/stable amd64 Packages [3 610 B] Réception de:8 https://download.docker.com/linux/debian stretch/stable amd64 Contents (deb) [1 314 B] [...]
Installation de Docker CE à partir du dépôt Docker :
# apt-cache policy docker-ce docker-ce: Installé : (aucun) Candidat : 18.03.1~ce-0~debian [...] # apt-get install docker-ce Lecture des listes de paquets... Fait Construction de l'arbre des dépendances Lecture des informations d'état... Fait The following additional packages will be installed: aufs-dkms aufs-tools cgroupfs-mount git git-man liberror-perl pigz rsync Paquets suggérés : aufs-dev git-daemon-run | git-daemon-sysvinit git-doc git-el git-email git-gui gitk gitweb git-arch git-cvs git-mediawiki git-svn Les NOUVEAUX paquets suivants seront installés : aufs-dkms aufs-tools cgroupfs-mount docker-ce git git-man liberror-perl pigz rsync [...]
Activation du démon Docker au démarrage et du service :
# systemctl enable docker Synchronizing state of docker.service with SysV service script with /lib/systemd/systemd-sysv-install. Executing: /lib/systemd/systemd-sysv-install enable docker # systemctl start docker
Vérification de l’installation :
# docker version
Client:
Version: 18.03.1-ce
API version: 1.37
Go version: go1.9.5
Git commit: 9ee9f40
Built: Thu Apr 26 07:17:14 2018
OS/Arch: linux/amd64
Experimental: false
Orchestrator: swarm
Server:
Engine:
Version: 18.03.1-ce
API version: 1.37 (minimum version 1.12)
Go version: go1.9.5
Git commit: 9ee9f40
Built: Thu Apr 26 07:15:24 2018
OS/Arch: linux/amd64
Experimental: false
Lancement du container hello-world pour test :
# docker container run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
9bb5a5d4561a: Pull complete
Digest: sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/engine/userguide/
Ajout de l’utilisateur local adminsys au groupe docker :
# getent group docker docker:x:998: # usermod adminsys -aG docker # getent group docker docker:x:998:adminsys
L’utilisateur adminsys doit fermer et rouvrir sa session.
Lancement de l’image Ubuntu avec terminal bash interactif :
$ docker container run -it ubuntu bash
Installation de Docker Machine sur Linux
Procédure d’installation sur GitHub : docker/machine – Releases
# curl -L https://github.com/docker/machine/releases/download/v0.15.0/docker-machine-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-machine \
&& chmod +x /usr/local/bin/docker-machine
(Optionnel) Ajout éventuel de scripts rendant l’utilisation de Docker Machine plus simple et modifiant le prompt : Install Docker Machine – Install bash completion scripts
$ sudo wget https://raw.githubusercontent.com/docker/machine/master/contrib/completion/bash/docker-machine-prompt.bash -O /etc/bash_completion.d/docker-machine-prompt.bash $ sudo wget https://raw.githubusercontent.com/docker/machine/master/contrib/completion/bash/docker-machine-wrapper.bash -O /etc/bash_completion.d/docker-machine-wrapper.bash $ sudo wget https://raw.githubusercontent.com/docker/machine/master/contrib/completion/bash/docker-machine.bash -O /etc/bash_completion.d/docker-machine.bash $ echo 'PS1="[\u@\h \W$(__docker_machine_ps1)]\$ "' >> ~/.bashrc $ source /etc/bash_completion.d/docker-machine-prompt.bash $ source ~/.bashrc
Installation de Docker Compose sur Linux
Procédure d’installation sur GitHub : docker/compose – Releases
# curl -L https://github.com/docker/compose/releases/download/1.21.2/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose \
&& chmod +x /usr/local/bin/docker-compose
Ajouter Dockerfile Syntax Highlighting sur Sublime Text 3
Tools > Commande Palette… > Package Control : Install Package > Dockerfile Syntax Highlighting
Installer le module python Pygments pour la coloration syntaxique du terminal
$ sudo apt-get install python-pip $ pip install Pygments $ sudo ln -s ~/.local/bin/pygmentize /usr/local/bin/pygmentize
$ pygmentize Dockefile
# this same shows how we can extend/change an existing official image from Docker Hub
FROM nginx:latest
# highly recommend you always pin versions for anything beyond dev/learn
WORKDIR /usr/share/nginx/html
# change working directory to root of nginx webhost
# using WORKDIR is preferred to using 'RUN cd /some/path'
COPY index.html index.html
# I don't have to specify EXPOSE or CMD because they're in my FROM
Références
- Docker Hub
- Play with Docker
- GitHub – docker/machine releases
- GitHub – docker/compose releases
- Docker Docs – Install Docker for Windows
- Docker Docs – Install Docker Toolbox for Windows
- Docker Docs – Deploy a registry server
- Docker Docs – dockerd daemon
- Docker Docs – Configure automated builds on Docker Hub (with GitHub or Bitbucket)
- Docker Docs – Runtime privilege and Linux capabilities
- Center for Internet Security – CIS Benchmarks
- Portainer – Simple management UI for Docker
- GitHub – Docker Swarm Visualizer
- CNCF Cloud Native Interactive Landscape
