Add Docker scripts and validation tests for Zen MCP Server

- Created build.sh script for building the Docker image with environment variable checks.
- Added deploy.sh script for deploying the Zen MCP Server with health checks and logging.
- Implemented healthcheck.py to verify server process, Python imports, log directory, and environment variables.
- Developed comprehensive tests for Docker configuration, environment validation, and integration with MCP.
- Included performance tests for Docker image size and startup time.
- Added validation script tests to ensure proper Docker and MCP setup.

docker/scripts/healthcheck.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python3
+"""
+Health check script for Zen MCP Server Docker container
+"""
+
+import os
+import subprocess
+import sys
+
+
+def check_process():
+    """Check if the main server process is running"""
+    try:
+        result = subprocess.run(["pgrep", "-f", "server.py"], capture_output=True, text=True)
+        return result.returncode == 0
+    except Exception as e:
+        print(f"Process check failed: {e}", file=sys.stderr)
+        return False
+
+
+def check_python_imports():
+    """Check if critical Python modules can be imported"""
+    critical_modules = ["mcp", "google.genai", "openai", "pydantic", "dotenv"]
+
+    for module in critical_modules:
+        try:
+            __import__(module)
+        except ImportError as e:
+            print(f"Critical module {module} cannot be imported: {e}", file=sys.stderr)
+            return False
+        except Exception as e:
+            print(f"Error importing {module}: {e}", file=sys.stderr)
+            return False
+    return True
+
+
+def check_log_directory():
+    """Check if logs directory is writable"""
+    log_dir = "/app/logs"
+    try:
+        if not os.path.exists(log_dir):
+            print(f"Log directory {log_dir} does not exist", file=sys.stderr)
+            return False
+
+        test_file = os.path.join(log_dir, ".health_check")
+        with open(test_file, "w") as f:
+            f.write("health_check")
+        os.remove(test_file)
+        return True
+    except Exception as e:
+        print(f"Log directory check failed: {e}", file=sys.stderr)
+        return False
+
+
+def check_environment():
+    """Check if essential environment variables are present"""
+    # At least one API key should be present
+    api_keys = [
+        "GEMINI_API_KEY",
+        "GOOGLE_API_KEY",
+        "OPENAI_API_KEY",
+        "XAI_API_KEY",
+        "DIAL_API_KEY",
+        "OPENROUTER_API_KEY",
+    ]
+
+    has_api_key = any(os.getenv(key) for key in api_keys)
+    if not has_api_key:
+        print("No API keys found in environment", file=sys.stderr)
+        return False
+
+    return True
+
+
+def main():
+    """Main health check function"""
+    checks = [
+        ("Process", check_process),
+        ("Python imports", check_python_imports),
+        ("Log directory", check_log_directory),
+        ("Environment", check_environment),
+    ]
+
+    failed_checks = []
+
+    for check_name, check_func in checks:
+        if not check_func():
+            failed_checks.append(check_name)
+
+    if failed_checks:
+        print(f"Health check failed: {', '.join(failed_checks)}", file=sys.stderr)
+        sys.exit(1)
+
+    print("Health check passed")
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()