refac: rethought the complete workflow and deployement flow ; docs etc.

internal/infrastructure/mailer/mailRepository.go

@@ -29,7 +29,7 @@ func (m MailRepository) Send(receiverAddress string, templateName string, data a
 
 	d := gomail.NewDialer(smtpHost, smtpPort, from, password)
 
-	tmpl, err := template.ParseFS(mailTemplateFiles, "mail/templates/"+templateName+".html")
+	tmpl, err := template.ParseFS(mailTemplateFiles, "templates/"+templateName+".html")
 	if err != nil {
 		log.Println("error when template.ParseFS:", err)
 		return err