ubuntu install docker

docker installation

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done

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

user config

usermod -aG docker lull

pull alpine

even if docker hub shows no alpine 3.15

docker pull alpine:3.15

create container

• -i: keep STDIN, 否则 docker start 直接退出，docker exec 也无效，非交互模式应该是在启动脚本里加入long live server
• -t: 创建伪终端，更好的cli交互体验
• –name alpine: 指定名字
• –publish-all: 公开端口
• -v /e:/e 共享挂载目录

• docker run -it --name alpine --publish-all -v /e:/e alpine:3.15

run

start container if not yet

docker ps  |grep alpine || docker start alpine

run interactive ali

docker exec -it  alpine sh

Appendix

running ssh service in these containers is a bit annoying

although you could just run

apk add openssh
`which sshd`