Добавлены новые документы и инструкции по настройке, использованию и тестированию SSL сертификатов Let's Encrypt с использованием API reg.ru. Обновлены зависимости в requirements.txt для поддержки новых функций. Включены подробные шаги по автоматизации, созданию и продлению сертификатов, а также интеграции с Nginx Proxy Manager.

docs/en/QUICKSTART_BUILD_EN.md

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+# 🎯 Quick Start - Building Executables
+
+This is a quick guide for those who want to build an executable file fast.
+
+## For Linux
+
+### 1. Install dependencies
+```bash
+sudo apt-get update
+sudo apt-get install -y python3 python3-pip git make
+```
+
+### 2. Clone repository
+```bash
+git clone https://github.com/DFofanov/configure_nginx_manager.git
+cd configure_nginx_manager
+```
+
+### 3. Build
+```bash
+make build-linux
+```
+
+### 4. Result
+```bash
+ls -lh dist/letsencrypt-regru
+# Executable file is ready!
+```
+
+### 5. Install (optional)
+```bash
+sudo cp dist/letsencrypt-regru /usr/local/bin/
+sudo chmod +x /usr/local/bin/letsencrypt-regru
+```
+
+### 6. Use
+```bash
+letsencrypt-regru --help
+```
+
+---
+
+## For Windows
+
+### 1. Install Python
+Download from [python.org](https://www.python.org/downloads/) and install
+
+### 2. Clone repository
+```powershell
+git clone https://github.com/DFofanov/configure_nginx_manager.git
+cd configure_nginx_manager
+```
+
+### 3. Build
+```powershell
+make build-windows
+```
+
+### 4. Result
+```powershell
+dir dist\letsencrypt-regru.exe
+# Executable file is ready!
+```
+
+### 5. Use
+```powershell
+.\dist\letsencrypt-regru.exe --help
+```
+
+---
+
+## Creating Release for Both Platforms
+
+```bash
+# This will create packages for Linux and Windows
+make release
+```
+
+**Result in `dist/`:**
+- `letsencrypt-regru-linux-x86_64.tar.gz`
+- `letsencrypt-regru-windows-x86_64.zip`
+
+---
+
+## Useful Commands
+
+```bash
+# Show help for all commands
+make help
+
+# Build environment information
+make build-info
+
+# Test built file
+make test-build
+
+# Clean artifacts
+make clean-build
+```
+
+---
+
+## ❓ Problems?
+
+See [BUILD_GUIDE_EN.md](BUILD_GUIDE_EN.md) for detailed instructions and troubleshooting.
+
+---
+
+**File size:** ~40-60 MB (including Python runtime)  
+**Build time:** ~2-5 minutes  
+**Requirements:** Python 3.8+, PyInstaller