Обновлён README: Docker как рекомендуемый метод установки

- Добавлена секция Installation (Docker) с примером запуска
- Таблица переменных окружения (DB_HOST, DB_PORT, DB_CHARSET)
- Обновлена секция Configuration и Troubleshooting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -1,9 +1,34 @@
-# Turbo RFQ - MariaDB simple Web UI
+# TurboRFQ - MariaDB Web UI
 
 A lightweight PHP web application that provides an Excel-like interface for browsing and editing MariaDB tables.
 Users authenticate with **their own MariaDB credentials**, and the app works with *any* schema by reading metadata from `information_schema`.
 
-> Note: This README assumes a Linux environment with PHP 8.1+ and MariaDB available.
+---
+
+## Installation (Docker)
+
+**Recommended method:**
+
+```bash
+docker pull git.mchus.pro/mchus/turborfq:latest
+
+docker run -d \
+  --name turborfq \
+  -p 8080:8080 \
+  -e DB_HOST=your-mariadb-host \
+  -e DB_PORT=3306 \
+  git.mchus.pro/mchus/turborfq:latest
+```
+
+Open http://localhost:8080 in your browser.
+
+### Environment Variables
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `DB_HOST` | localhost | MariaDB server address |
+| `DB_PORT` | 3306 | MariaDB server port |
+| `DB_CHARSET` | utf8mb4 | Connection charset |
 
 ---
 
@@ -79,9 +104,11 @@ php -r "unlink('composer-setup.php');"
 
 ---
 
-## Installation
+## Installation (Manual)
 
-1. Clone or copy the project:
+If you prefer to run without Docker:
+
+1. Clone the project:
 
 ```bash
 cd /path/to
@@ -101,17 +128,7 @@ This reads `composer.json` and installs Slim, PHP-DI and all required packages i
 
 ## Configuration
 
-By default, `Db.php` uses:
+Connection settings are configured via environment variables (see table above).
-
-- Host: `localhost`
-- Port: `3306`
-- Charset: `utf8mb4`
-
-If your MariaDB server is different, update the DSN in `src/Db.php`:
-
-```php
-$dsn = 'mysql:host=localhost;port=3306;charset=utf8mb4';
-```
 
 No database name is hardcoded: the app reads available schemas from `information_schema` and shows only those the connected user can see.
 
@@ -197,15 +214,13 @@ http://localhost:8080/
 ## Troubleshooting
 
 - **Blank page or PHP errors**
-  Make sure `display_errors` is enabled in development, or check web server error logs.
+  Make sure `display_errors` is enabled in development, or check container logs: `docker logs turborfq`
 
-- **“Not authenticated” / 401 responses**  
+- **"Not authenticated" / 401 responses**
   Ensure you logged in successfully and that your browser accepts cookies (session).
 
 - **Cannot connect to MariaDB**
-  - Verify host/port in `Db.php`.
+  - Verify `DB_HOST` and `DB_PORT` environment variables.
   - Confirm credentials using `mysql` client or another tool.
   - Check firewall and bind-address on the MariaDB server.
-
+  - If running in Docker, use host IP or `host.docker.internal` instead of `localhost`.
-
-```