DockerRegistryを使ってみる

Dockerをインストール

    $ sudo apt update
    $ sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
    $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
    $ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
    $ sudo apt update
    $ sudo apt install -y docker-ce
    $ sudo systemctl status docker
    $ sudo docker ps
    $ cat /etc/group | grep docker
    $ sudo gpasswd -a kn docker
    $ cat /etc/group | grep docker
    $ sudo chmod 666 /var/run/docker.sock 
    $ docker ps

Docker-Compose をインストール

    $ export compose='1.24.0'
    $ sudo curl -L https://github.com/docker/compose/releases/download/${compose}/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
    $ sudo chmod 0755 /usr/local/bin/docker-compose
    $ docker-compose -v

Docker Registry をインストール

    $ docker search registry
    $ docker pull registry
    $ docker images
    $ docker run -d -p 5000:5000 registry

NginxのDockerImageを作成

    $ mkdir docker-study
    $ cd docker-study
    $ vi Dockerfile
    ----------
    # イメージの取得
    FROM centos:latest

    # 作成者情報
    MAINTAINER 0.1 http://localhost/oldwp/

    # Nginx用レポジトリファイルのコピー
    ADD nginx.repo /etc/yum.repos.d/

    # Nginxのインストール
    RUN ["yum", "-y", "install", "nginx"]

    # Nginxの自動起動設定
    RUN ["systemctl", "enable", "nginx.service"]
    ----------
    $ vi nginx.repo
    ----------
    [nginx-stable]
    name=nginx stable repo
    baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
    gpgcheck=1
    enabled=1
    gpgkey=https://nginx.org/keys/nginx_signing.key
    ----------
    $ docker build -t mynginx .
    $ docker tag mynginx localhost:5000/nginx
    $ docker images

作成したイメージをDocker Registry にPush

    $ docker push localhost:5000/nginx

作成したイメージを削除

    $ docker rmi mynginx
    $ docker rmi localhost:5000/nginx
    $ docker images

Docker Registryから pull してみる

    $ docker pull localhost:5000/nginx
    $ docker images

pull した nginx を起動

    docker run --privileged --name "mynginx" -itd -p 8080:80 localhost:5000/nginx /sbin/init

参考URL

• https://qiita.com/morikooooo/items/9fd41bcd8d1ce9170301
• https://www.atmarkit.co.jp/flinux/rensai/linuxtips/164linendm.html
• https://kazuhisya.netlify.com/2016/02/14/docker-privileged-containers/
• https://qiita.com/mom0tomo/items/35dfacb628df1bd3651e
• https://qiita.com/Brutus/items/da63d23be32d505409c6
• https://qiita.com/iganari/items/fe4889943f22fd63692a
• https://qiita.com/gold-kou/items/44860fbda1a34a001fc1