Snapd timer invoked oneshot service

go.mod

module github.com/ernestl/hello-world

go 1.19

hello-world.go

package main

import (
	"fmt"
	"time"
)

func main() {	
	fmt.Println("Hello world running starting...")

	for {
		fmt.Println("Hello World!")
		time.Sleep(2 * time.Second)
	}
}

snapcraft.yaml

name: hello-world-service
base: core20
version: '0.1'
summary: Hello world service
description: |
  Prints "hello world" in the journal every 2 seconds
grade: stable
confinement: strict

apps:
  print-hello:
    command: bin/hello-world
    daemon: simple

parts:
  hello-world:
    plugin: go
    source-type: local
    source: .