fix: Docker configuration for Claude Desktop compatibility

Fixed multiple issues preventing n8n-MCP from working with Claude Desktop:

1. Removed --pull always flag that caused:
   - Multiple simultaneous container starts
   - Image pulling during JSON-RPC communication
   - Timeout errors and connection failures

2. Added --name flag to prevent duplicate containers

3. Added explicit docker pull step to ensure image is ready

4. Proper step numbering for clear setup flow

The logs showed 'Shutting down...' breaking JSON-RPC communication and
multiple containers trying to start simultaneously. This configuration
ensures single, stable container execution.

Tested configuration now works reliably with Claude Desktop.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

README.md

@@ -39,15 +39,22 @@ Get n8n-MCP running in 5 minutes:
 
 ### For Claude Desktop
 
-Add this to your Claude Desktop config:
+1. First, pull the Docker image:
+```bash
+docker pull ghcr.io/czlonkowski/n8n-mcp:latest
+```
+
+2. Add this to your Claude Desktop config:
 ```json
 {
   "mcpServers": {
     "n8n-mcp": {
       "command": "docker",
       "args": [
-        "run", "--rm", "-i",
-        "--pull", "always",
+        "run",
+        "--rm",
+        "-i",
+        "--name", "claude-n8n-mcp",
         "-e", "MCP_MODE=stdio",
         "-e", "LOG_LEVEL=error",
         "-e", "DISABLE_CONSOLE_OUTPUT=true",
@@ -58,12 +65,12 @@ Add this to your Claude Desktop config:
 }
 ```
 
-**Configuration file locations:**
-- **macOS**: `~/Library/Application Support/Claude/claude_desktop_config.json`
-- **Windows**: `%APPDATA%\Claude\claude_desktop_config.json`
-- **Linux**: `~/.config/Claude/claude_desktop_config.json`
+3. **Configuration file locations:**
+   - **macOS**: `~/Library/Application Support/Claude/claude_desktop_config.json`
+   - **Windows**: `%APPDATA%\Claude\claude_desktop_config.json`
+   - **Linux**: `~/.config/Claude/claude_desktop_config.json`
 
-**Restart Claude Desktop** - That's it! 🎉
+4. **Restart Claude Desktop** - That's it! 🎉
 
 ### For HTTP Server (Teams)