feat: add alternative to TC_HOST as in Java / .NET

Author: meiswjn

core/testcontainers/core/docker_client.py

@@ -166,6 +166,8 @@ def host(self) -> str:
         # https://github.com/testcontainers/testcontainers-go/blob/dd76d1e39c654433a3d80429690d07abcec04424/docker.go#L644
         # if os env TC_HOST is set, use it
         host = os.environ.get("TC_HOST")
+        if not host:
+            host = os.environ.get("TESTCONTAINERS_HOST_OVERRIDE")
         if host:
             return host
         try: