fix: Resolve unexpected BrowserContext closure during crawl in Docker

- Removed __del__ method in AsyncPlaywrightCrawlerStrategy to ensure reliable browser lifecycle management by using explicit context managers.
- Added process monitoring in ManagedBrowser to detect and log unexpected terminations of the browser subprocess.
- Updated Docker configuration to expose port 9222 for remote debugging and allocate extra shared memory to prevent browser crashes.
- Improved error handling and resource cleanup for browser instances, particularly in Docker environments.

Resolves Issue #256

README.md

@@ -1,4 +1,4 @@
-# 🔥🕷️ Crawl4AI: LLM Friendly Web Crawler & Scrapper
+# 🔥🕷️ Crawl4AI: LLM Friendly Web Crawler & Scraper
 
 <a href="https://trendshift.io/repositories/11716" target="_blank"><img src="https://trendshift.io/api/badge/repositories/11716" alt="unclecode%2Fcrawl4ai | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
 
@@ -127,6 +127,9 @@ docker pull unclecode/crawl4ai:gpu      # GPU-enabled version
 
 # Run the container
 docker run -p 11235:11235 unclecode/crawl4ai:basic  # Replace 'basic' with your chosen version
+
+# In case to allocate more shared memory for the container
+docker run --shm-size=2gb -p 11235:11235 unclecode/crawl4ai:basic
 ```
 
 #### Option 2: Build from Repository