docs: update CONTRIBUTING.md to reference BUILD.md for development environment setup

Signed-off-by: Vladislav Polyakov <[email protected]>

Author: polRk

BUILD.md

@@ -2,7 +2,7 @@
 
 This document has detailed instructions on how to build ydb-python-sdk from source and run style and unit tests.
 
-### Pre-requisites
+## Pre-requisites
 
 - Install [Docker](https://docs.docker.com/engine/install/).
 - Install [Python](https://docs.python.org/3.8/)
@@ -52,4 +52,13 @@ Use the command below for regenerate protobuf code.
 
 ```sh
 make protobuf
-```
+```
+
+## Using Dev Containers
+
+This repository includes Dev Containers configuration for a quick development environment setup. For general information about Dev Containers, see the [official guide](https://code.visualstudio.com/docs/devcontainers/containers).
+
+The dev container automatically sets up:
+- A local YDB database instance for testing
+- YDB CLI with a pre-configured profile named `local` that connects to the database
+- All Python dependencies and development tools

CONTRIBUTING.md

@@ -4,113 +4,7 @@
 
 YDB is a free and open project and we appreciate to receive contributions from our community.
 
-## Development Environment Setup
-
-### Using Dev Containers (Recommended)
-
-This repository includes a complete development environment using Docker containers that provides everything you need to start contributing immediately. The devcontainer setup includes:
-
-- **Python 3.9** development environment with all necessary dependencies
-- **YDB server** running locally in a container
-- **Pre-configured tools**: Git, GitHub CLI, YDB CLI, and essential Python packages
-- **VS Code extensions**: Python development tools, linting, formatting, and debugging support
-
-#### Prerequisites
-
-- [Docker](https://www.docker.com/get-started) installed and running
-- [VS Code](https://code.visualstudio.com/) with the [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
-
-#### Quick Start with Dev Containers
-
-1. Clone the repository:
-   ```bash
-   git clone https://github.com/ydb-platform/ydb-python-sdk.git
-   cd ydb-python-sdk
-   ```
-
-2. Open in VS Code:
-   ```bash
-   code .
-   ```
-
-3. When prompted, click "Reopen in Container" or use the Command Palette (`Ctrl+Shift+P` / `Cmd+Shift+P`) and select "Dev Containers: Reopen in Container"
-
-4. Wait for the container to build and start (first time may take a few minutes)
-
-5. The development environment is ready! You can now run tests, debug code, and develop new features.
-
-### Using GitHub Codespaces
-
-GitHub Codespaces provides a cloud-based development environment that works directly in your browser or VS Code. It's perfect for quick contributions without setting up a local environment.
-
-#### Quick Start with Codespaces
-
-1. Navigate to the [repository on GitHub](https://github.com/ydb-platform/ydb-python-sdk)
-2. Click the green "Code" button
-3. Select the "Codespaces" tab
-4. Click "Create codespace on main" (or your desired branch)
-5. Wait for the environment to initialize (usually 2-3 minutes)
-6. Start coding directly in the browser or connect with your local VS Code
-
-#### What's Included in the Development Environment
-
-When you use either dev containers or Codespaces, the following environment is automatically set up:
-
-**Container Services:**
-- **SDK Container (`sdk`)**: Your main development environment running Python 3.9 on Debian Bookworm
-- **YDB Container (`ydb`)**: Local YDB server (version 25.1) for testing and development
-
-**Development Tools:**
-- **YDB CLI**: Pre-installed and configured to connect to the local YDB instance
-- **Python Environment**: All project dependencies installed via `pip install -e .`
-- **Git Configuration**: Automatic setup for signed commits (if configured)
-- **VS Code Extensions**: Python development stack including linting, formatting, and debugging
-
-**Network Configuration:**
-- **Port 2135**: YDB gRPC with TLS
-- **Port 2136**: YDB gRPC without TLS
-- **Port 8765**: YDB Monitoring interface
-- These ports are automatically forwarded and accessible from your local machine
-
-**Environment Variables:**
-The following environment variables are pre-configured for immediate use:
-- `YDB_CONNECTION_STRING=grpc://ydb:2136/local` - Standard connection
-- `YDB_CONNECTION_STRING_SECURE=grpcs://ydb:2135/local` - Secure connection
-- `YDB_SSL_ROOT_CERTIFICATES_FILE=/ydb_certs/ca.pem` - SSL certificates
-- `YDB_STATIC_CREDENTIALS_USER=root` and `YDB_STATIC_CREDENTIALS_PASSWORD=1234` - Test credentials
-
-**Automatic Setup Process:**
-1. **Initialize**: Git configuration for signed commits and user settings
-2. **Post-Create**: YDB CLI profile setup and GPG configuration for SSH signing
-3. **Post-Start**: Installation of Python dependencies, SDK package, and testing tools (tox)
-
-#### Running Tests in the Development Environment
-
-Once your environment is ready, you can run the test suite:
-
-```bash
-# Run all tests
-tox
-
-# Run specific test categories
-python -m pytest tests/
-
-# Run with specific Python version
-tox -e py39
-```
-
-#### Connecting to the Local YDB Instance
-
-The YDB CLI is pre-configured to connect to the local instance:
-
-```bash
-# Run a simple query
-echo "SELECT 1;" | ydb
-
-# Access the web interface
-# Open http://localhost:8765 in your browser (when using local dev containers)
-# In codespaces you can access it via the provided URL in the terminal output.
-```
+For information about setting up your development environment, please see [BUILD.md](BUILD.md).
 
 ## Contributing code changes