筆記:在Ubuntu20.04安裝Docker及Compose

Install docker/docker-compose in Ubuntu 20.04

今天想到自己沒有做個docker安裝的筆記，趕快補上!

安裝前需求套件

sudo apt update
sudo apt -y install apt-transport-https ca-certificates curl gnupg lsb-release

加入gpg key

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

設定來源

echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

安裝docker套件

sudo apt update
sudo apt -y install docker-ce docker-ce-cli containerd.io

設定群組權限

將docker加入，這樣就不用每次docker時要sudo，而且使用VSCode remote development也需要這個設定 

sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker

參考: https://docs.docker.com/engine/install/linux-postinstall/

測試

docker run hello-world

docker會去官方repository抓示範用的image，只會印出歡迎訊息。

安裝Compose

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

參考: https://docs.docker.com/compose/install/