docs: [example][systemd] use DynamicUser=yes (rapiz1#186)

This patch fixes a warning generated by some new version of systemd. Use "User=nobody" seems to be considered unsafe. So maybe we need to fix it in our example files. ● [email protected] - Rathole Client Service Loaded: loaded (/etc/systemd/system/[email protected]; enabled; vendor preset: enabled) Active: active (running) since Sat 2022-09-03 23:38:43 CST; 1h 27min ago Main PID: 507903 (rathole) Tasks: 14 (limit: 76731) Memory: 6.9M CPU: 39.908s CGroup: /system.slice/system-ratholec.slice/[email protected] └─507903 /usr/local/bin/rathole -c /etc/rathole/hitmc.toml Sep 03 23:38:43 <hostname> systemd[1]: Started Rathole Client Service. ... Sep 03 23:39:25 <hostname> systemd[1]: /etc/systemd/system/[email protected]:7: Special user nobody configured, this is not safe! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969329 Link: trojan-gfw/trojan#612 Link: https://www.vvave.net/archives/fix-the-systemd-error-special-user-nobody-configured-this-is-not-safe.html
shshekhar93 · Sep 4, 2022 · 67182fb · 67182fb
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diff --git a/examples/systemd/[email protected] b/examples/systemd/[email protected]
@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 Type=simple
-User=nobody
+DynamicUser=yes
 Restart=on-failure
 RestartSec=5s
 ExecStart=/usr/bin/rathole /etc/rathole/%i.toml

diff --git a/examples/systemd/ratholec.service b/examples/systemd/ratholec.service
@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 Type=simple
-User=nobody
+DynamicUser=yes
 Restart=on-failure
 RestartSec=5s
 ExecStart=/usr/bin/rathole -c /etc/rathole/rathole.toml

diff --git a/examples/systemd/[email protected] b/examples/systemd/[email protected]
@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 Type=simple
-User=nobody
+DynamicUser=yes
 Restart=on-failure
 RestartSec=5s
 ExecStart=/usr/bin/rathole -c /etc/rathole/%i.toml

diff --git a/examples/systemd/ratholes.service b/examples/systemd/ratholes.service
@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 Type=simple
-User=nobody
+DynamicUser=yes
 Restart=on-failure
 RestartSec=5s
 ExecStart=/usr/bin/rathole -s /etc/rathole/rathole.toml

diff --git a/examples/systemd/[email protected] b/examples/systemd/[email protected]
@@ -4,7 +4,7 @@ After=network.target
 
 [Service]
 Type=simple
-User=nobody
+DynamicUser=yes
 Restart=on-failure
 RestartSec=5s
 ExecStart=/usr/bin/rathole -s /etc/rathole/%i.toml