Add command for installing the application.

install.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"fmt"
+	"html/template"
+	"os"
+
+	"github.com/urfave/cli/v2"
+)
+
+const systemdUnitFile = `[Unit]
+Description=i5 Reverse Proxy
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+ExecStart={{.path}}
+
+[Install]
+WantedBy=multi-user.target
+`
+
+var installCommand = &cli.Command{
+	Name:   "install",
+	Usage:  "install the application as a local service",
+	Action: install,
+}
+
+func install(c *cli.Context) error {
+
+	// Determine the full path to the executable
+	p, err := os.Executable()
+	if err != nil {
+		return err
+	}
+
+	// Compile the template
+	t, err := template.New("").Parse(systemdUnitFile)
+	if err != nil {
+		return err
+	}
+
+	// Attempt to open the file
+	f, err := os.Create("/lib/systemd/system/i5.service")
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	// Write the template
+	t.Execute(f, map[string]interface{}{
+		"path": p,
+	})
+
+	fmt.Println("Service installed!")
+	fmt.Println("")
+	fmt.Println("To modify command line arguments, please edit:")
+	fmt.Println("  /lib/systemd/system/i5.service")
+	fmt.Println("")
+	fmt.Println("To enable the service and start it, run:")
+	fmt.Println("  systemctl enable lampctl")
+	fmt.Println("  systemctl start lampctl")
+
+	return nil
+}

main.go

@@ -139,6 +139,7 @@ func main() {
 			},
 		},
 		Commands: []*cli.Command{
+			installCommand,
 			{
 				Name:  "createuser",
 				Usage: "create a new user account",