Fix LiveKit binary download validation

- Add file size validation (must be >1MB)
- Show contents of small files that are likely error pages
- Add curl -f flag to fail on HTTP errors
- Enhanced logging to show actual file contents

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

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

Author: YedPool

livekit-server/Dockerfile

@@ -19,7 +19,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Copy application code
 COPY main.py .
 
-# Download LiveKit server binary during build with better debugging
+# Download LiveKit server binary during build with validation
 RUN echo "System info:" && \
     uname -a && \
     dpkg --print-architecture && \
@@ -34,13 +34,20 @@ RUN echo "System info:" && \
     fi && \
     download_url="https://github.com/livekit/livekit/releases/latest/download/livekit-server_linux_${binary_arch}" && \
     echo "Downloading LiveKit server from: $download_url" && \
-    curl -L "$download_url" -o /usr/local/bin/livekit-server && \
-    echo "Download completed, file info:" && \
+    curl -L -f --retry 3 --retry-delay 2 "$download_url" -o /usr/local/bin/livekit-server && \
+    echo "Download completed, validating..." && \
     ls -la /usr/local/bin/livekit-server && \
+    file_size=$(stat -c%s /usr/local/bin/livekit-server) && \
+    echo "File size: $file_size bytes" && \
+    if [ "$file_size" -lt 1000000 ]; then \
+        echo "ERROR: Downloaded file is too small ($file_size bytes), likely an error page" && \
+        echo "File contents:" && \
+        head -c 500 /usr/local/bin/livekit-server && \
+        exit 1; \
+    fi && \
     file /usr/local/bin/livekit-server && \
     chmod +x /usr/local/bin/livekit-server && \
-    echo "Final binary info:" && \
-    file /usr/local/bin/livekit-server && \
+    echo "Binary validation successful" && \
     ldd /usr/local/bin/livekit-server || echo "ldd failed - static binary or missing dependencies"
 
 # Create directory for config files

livekit-server/main.py

@@ -168,13 +168,19 @@ def start(self):
                 logger.info(f"  Size: {stat_info.st_size} bytes")
                 logger.info(f"  Mode: {oct(stat_info.st_mode)}")
 
-                # Check file type
+                # Check file type and contents
                 try:
                     import subprocess
                     result = subprocess.run(['file', binary_path], capture_output=True, text=True)
                     logger.info(f"  File type: {result.stdout.strip()}")
+                    
+                    # Show file contents since it's only 9 bytes
+                    with open(binary_path, 'rb') as f:
+                        content = f.read()
+                        logger.info(f"  File contents (hex): {content.hex()}")
+                        logger.info(f"  File contents (text): {content.decode('utf-8', errors='ignore')}")
                 except Exception as e:
-                    logger.info(f"  Could not determine file type: {e}")
+                    logger.info(f"  Could not analyze file: {e}")
 
                 # Test if it's executable by trying to run it with --help
                 try: