docker安装和使用

Set up Docker’s apt repository

https://docs.docker.com/engine/install/ubuntu/

Add Docker’s official GPG key:

sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

Add the repository to Apt sources:

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

To install the latest version, run:

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Verify that the Docker Engine installation is successful by running the hello-world image

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

源配置

命令行

docker pull 镜像名称 -–registry-mirror=国内镜像源地址

配置文件

{
  "registry-mirrors": ["https://hub-mirror.c.163.com"]
}

重启服务

sudo systemctl restart docker

Install the Compose plugin

https://github.com/docker/compose

For Ubuntu and Debian, run:

sudo apt-get update
sudo apt-get install docker-compose-plugin

For RPM-based distros, run:

sudo yum update
sudo yum install docker-compose-plugin

Verify that Docker Compose is installed correctly by checking the version.

docker compose version

Expected output:

Docker Compose version vN.N.N

The Compose file

The default path for a Compose file is compose.yaml (preferred) or compose.yml that is placed in the working directory. Compose also supports docker-compose.yaml and docker-compose.yml for backwards compatibility of earlier versions. If both files exist, Compose prefers the canonical compose.yaml.

What are the differences between Compose V1 and Compose V2?

https://docs.docker.com/compose/migrate/

Unlike Compose V1, Compose V2 integrates into the Docker CLI platform and the recommended command-line syntax is docker compose.

The Docker CLI platform provides a consistent and predictable set of options and flags, such as the DOCKER_HOST environment variable or the —context command-line flag.

This change lets you use all of the shared flags on the root docker command. For example, docker —log-level=debug —tls compose up enables debug logging from the Docker Engine as well as ensuring that TLS is used for the connection.