Mono-service2 and MacOS daemon on startup - macos

Question

I'm trying to make a MacOS agent to launch mono service on startup. The issue is that loaded daemon exits without any errors (no output to console.log, err.log - see agent.plist below), but mono-service2 does not create my.lock file and start a service.
If I click on Start script manually, it runs flawlessly. Any suggestions?
Environment:
MacOS: Catalina 10.15.7
Mono framework: 6.12.0.90
agent load:
launchctl load /Library/LaunchDaemons/agent.plist
agent.plist
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>agent</string>
<key>UserName</key>
<string>me</string>
<key>StandardErrorPath</key>
<string>/Users/me/Desktop/err.log</string>
<key>StandardOutPath</key>
<string>/Users/me/Desktop/console.log</string>
<key>KeepAlive</key>
<false/>
<key>LaunchOnlyOnce</key>
<true/>
<key>RunAtLoad</key>
<true/>
<key>Program</key>
<string>/bin/bash</string>
<key>ProgramArguments</key>
<array>
<string>bash</string>
<string>/Applications/my.app/Contents/MacOS/Start</string>
</array>
</dict>
</plist>
Start script:
#!/bin/bash
LOCK_FILE="my.lock"
MONO_DIR="/Library/Frameworks/Mono.framework"
cd `dirname "$0"`
rm -f $LOCK_FILE
$MONO_DIR/Commands/mono-service2 -l:$LOCK_FILE Service.exe

Answer 1

It appears that LaunchDaemon requires bash script to keep running to work properly. We can achieve this by supplying --no-daemon argument on Start script which prevents mono-service2 going background.
Complete Start script:
#!/bin/bash
LOCK_FILE="my.lock"
MONO_DIR="/Library/Frameworks/Mono.framework"
cd `dirname "$0"`
rm -f $LOCK_FILE
$MONO_DIR/Commands/mono-service2 -l:$LOCK_FILE Service.exe --no-daemon