目錄
工具準備：
- SD卡
- 讀卡器
- 鏡像
1、鏡像下載
https://ubuntu.com/
選擇想要的版本下載
Ubuntu 18.04.4 LTS for raspberry pi：這個版本將會長時間支持更新，持續到2023年4月份
Ubuntu 19.10 for raspberry pi ：僅支持9個月的更新，持續到2020年6月份
所以本文首選Ubuntu 18.04.4 LTS鏡像安裝演示
下載連接：
Ubuntu Server 18.04.4 for Raspberry Pi 4 64-bit ：ubuntu-18.04.4-preinstalled-server-arm64+raspi3.img.xz
Ubuntu Server 18.04.4 for Raspberry Pi 4 32-bit ：ubuntu-18.04.4-preinstalled-server-armhf+raspi3.img.xz
Ubuntu Server 19.10 for Raspberry Pi 4 64-bit：ubuntu-19.10.1-preinstalled-server-arm64+raspi3.img.xz
Ubuntu Server 19.10 for Raspberry Pi 4 32-bit：ubuntu-19.10.1-preinstalled-server-armhf+raspi3.img.xz
2、鏡像燒錄
鏡像燒錄教程傳送門：樹莓派4b之鏡像燒錄（手把手完整版）
3、系統登陸
默認賬號：ubuntu 默認密碼：ubuntu
4、換源
編輯 apt 源文件，更新爲國內鏡像源（注意：路徑節點不是 ubuntu，而是 ubuntu-ports）
sudo nano /etc/apt/sources.list
阿里雲源
deb https://mirrors.aliyun.com/ubuntu-ports/ disco main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu-ports/ disco main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu-ports/ disco-security main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu-ports/ disco-security main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu-ports/ disco-updates main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu-ports/ disco-updates main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu-ports/ disco-backports main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu-ports/ disco-backports main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu-ports/ disco-proposed main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu-ports/ disco-proposed main restricted universe multiverse
中科大源
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ disco main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ disco main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu-ports/ disco-proposed main restricted universe multiverse
清華源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ disco-proposed main restricted universe multiverse
5. 安裝桌面環境（可選擇：xubuntu-desktop、lubuntu-desktop、kubuntu-desktop）
sudo apt-get install xubuntu-desktop
6. 重啓系統
reboot
7. 安裝 Docker
sudo apt install docker.io
8.、安裝桌面環境（可選擇：gnome xubuntu-desktop、lubuntu-desktop、kubuntu-desktop）
安裝最新的gnome3.34c
因爲網絡原因，如果提示有安裝出錯，請再安裝一次：
sudo apt-get install gnome --fix-missing
我們也可以安裝更簡單的圖形界面 xubuntu-desktop
sudo apt-getinstall xinint
sudo apt-getxubuntu-desktop
參考資料
https://www.jianshu.com/p/3b60f8a778a7（本人的簡書哦，整理原來的內容，並添加一些內容，然後貼在這裏）
https://www.cnblogs.com/jinzesudawei/p/11701669.html