fix(core): add container logs to TimeoutError when wait strategy times out (#1007)

Include container logs in TimeoutError when wait strategy times out

Improves debugging when a container fails to start properly by attaching 
the stdout/stderr logs directly to the raised TimeoutError.

---------

Co-authored-by: Dave Ankin <alexanderankin@gmail.com>
Co-authored-by: Roy Moore <roy@moore.co.il>

Author: 3 people

core/testcontainers/core/container.py

@@ -221,7 +221,12 @@ def start(self) -> Self:
         docker_client.start(self._container)
 
         if self._wait_strategy is not None:
-            self._wait_strategy.wait_until_ready(self)
+            try:
+                self._wait_strategy.wait_until_ready(self)
+            except TimeoutError as ex:
+                if hasattr(ex, "add_note"):
+                    ex.add_note(self._container.logs().decode())
+                raise ex
 
         logger.info("Container started: %s", self._container.short_id)