1 移除旧版
sudo apt-get remove docker docker-engine docker.io containerd runc
2 设置repo
sudo apt-get install ca-certificates curl gnupg lsb-release

sudo mkdir -m 0755 -p /etc/apt/keyrings

curl -fsSL https://download.docker.com/linux/ubuntu/gpg |[......]

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find . -type f -name "*.c" \( -exec grep -q "A" {} \; ! -exec grep -q "B" {} \; \) -print
 [......]

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