A boilerplate for a new Go application

main.go

package main

import (
	"context"
	"flag"
	"log"
	"os"
	"os/signal"
	"syscall"
)

func main() {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	sigc := make(chan os.Signal, 2)
	signal.Notify(sigc, os.Interrupt, syscall.SIGTERM)

	go func() {
		<-sigc
		signal.Stop(sigc)
		cancel()
	}()

	if err := run(ctx, os.Args[1:]); err != nil {
		log.Fatal(err)
	}
}

func run(ctx context.Context, args []string) error {
	flags := flag.NewFlagSet("", flag.ExitOnError)

	if err := flags.Parse(args); err != nil {
		return err
	}

	return nil
}