Step-by-Step Guide to Install Docker, Docker‑Compose, and Harbor on CentOS

1. Install Docker

Official documentation: https://docs.docker.com/engine/install/centos/

1.1 Remove old versions

sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine

1.2 Set up the yum repository

1.2.1 Official repository

sudo yum install yum-utils device-mapper-persistent-data lvm2

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

1.2.2 Alibaba Cloud mirror

sudo yum install yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

2. Install a specific Docker Engine version

2.1 List all available versions

yum list docker-ce --showduplicates | sort -r

2.2 Install the chosen version

sudo yum install docker-ce-20.10.8-3.el7 docker-ce-cli-20.10.8-3.el7 containerd.io docker-compose-plugin

3. Configure image acceleration

mkdir -p /etc/docker

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors":["https://registry.docker-cn.com","https://smym36v5.mirror.aliyuncs.com"],
  "insecure-registries":["harbor_address:harbor_port"]
}
EOF

systemctl daemon-reload

systemctl restart docker

4. Verify Docker installation

docker version

5. Install Docker‑Compose

wget https://github.com/docker/compose/releases/download/v2.23.0/docker-compose-linux-x86_64

chmod +x docker-compose-linux-x86_64

mv docker-compose-linux-x86_64 docker-compose

docker-compose version

6. Download and install Harbor

wget https://github.com/goharbor/harbor/releases/download/v2.9.1/harbor-offline-installer-v2.9.1.tgz

6.1 Extract and configure

tar xf harbor-offline-installer-v2.9.1.tgz

cd harbor

cp harbor.yml.tmpl harbor.yml

vim harbor.yml

6.2 Start installation

./install.sh

7. Verify Harbor

Web login default credentials: admin / Harbor12345

docker ps