From c904c906f6073bd7c97f0f584f3646cb9eb509fd Mon Sep 17 00:00:00 2001
From: Andrey Kislyuk <kislyuk@gmail.com>
Date: Thu, 12 Dec 2019 13:59:48 -0800
Subject: [PATCH] Batch: explicitly specify json-file log driver

This is necessary when the Docker daemon on the host is configured to use a different log driver by default.
---
 moto/batch/models.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/moto/batch/models.py b/moto/batch/models.py
index ab52db54c..2a764f332 100644
--- a/moto/batch/models.py
+++ b/moto/batch/models.py
@@ -384,8 +384,9 @@ class Job(threading.Thread, BaseModel):
             time.sleep(1)
 
             self.job_state = "STARTING"
+            log_config = docker.types.LogConfig(type=docker.types.LogConfig.types.JSON)
             container = self.docker_client.containers.run(
-                image, cmd, detach=True, name=name
+                image, cmd, detach=True, name=name, log_config=log_config
             )
             self.job_state = "RUNNING"
             self.job_started_at = datetime.datetime.now()