樹莓派安裝Docker

# 裝https相關
$ sudo apt install apt-transport-https ca-certificates curl gnupg2 software-properties-common

# 取得Docker金鑰
$ curl -fsSL https://download.docker.com/linux/$(. /etc/os-release; echo "$ID")/gpg | sudo apt-key add -

# 編輯Docker來源
$ echo "deb [arch=armhf] https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") \ $(lsb_release -cs) stable" | \ sudo tee /etc/apt/sources.list.d/docker.list

# 安裝Docker
$ sudo apt install -y --no-install-recommends \ docker-ce \ cgroupfs-mount

# 加入pi到docker組
$ sudo addgroup --system docker $ sudo adduser pi docker $ newgrp docker

# 設為啟動服務

$ sudo systemctl restart docker
$ sudo systemctl enable docker

# 測試Docker是否正常
$ docker run hello-world

# 清理殘留軟體包

$ sudo apt autoremove --purge
$ sudo apt clean

參考來源:
yes-you-can-run-docker-on-raspbian