使用podman的時候，已經知道他沒有額外的守護進程，這個時候需要通過systemd實現容器的開機自動啟動
假設你的服務器目前已經生成了3個容器，容器的名稱分別是nginx1、nginx2、nginx3。注意三個容器一定要逐個啟動，否則就會報錯。
1.創建service文件
cd /usr/lib/systemd/system/
touch podman-container1.service
touch podman-container2.service
touch podman-container3.service
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1.1 三個service文件內容如下：
###podman-container1.service###
[Unit]
Description=Podman container1
[Service]
Type=simple
ExecStart=/usr/bin/podman start -a nginx1
ExecStop=/usr/bin/podman stop -t 10 nginx1
[Install]
WantedBy=multi-user.target
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###podman-container2.service###
[Unit]
Description=Podman container2
After=network.target
After=network-online.target
After=podman-container1.service
[Service]
Type=simple
ExecStart=/usr/bin/podman start -a nginx2
ExecStop=/usr/bin/podman stop -t 20 nginx2
[Install]
WantedBy=multi-user.target
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###podman-container3.service###
[Unit]
Description=Podman container3
After=network.target
After=network-online.target
After=podman-container2.service
[Service]
Type=simple
ExecStart=/usr/bin/podman start -a nginx3
ExecStop=/usr/bin/podman stop -t 22 nginx3
[Install]
WantedBy=multi-user.target
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2.設置開機啟動：
systemctl enable podman-container1.service
systemctl enable podman-container2.service
systemctl enable podman-container3.service
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3.重啟server驗證
reboot
docker ps -a