Use mongo:4.2.17

Author: umar221b

docker-compose.yml

@@ -29,12 +29,10 @@ services:
        - "11211:11211"
 
   mongo:
-    # We use WiredTiger in all environments. In development environments we use small files
-    # to conserve disk space, and disable the journal for a minor performance gain.
-    # See https://docs.mongodb.com/v3.0/reference/program/mongod/#options for complete details.
-    command: mongod --smallfiles --nojournal --storageEngine wiredTiger
+    # We disable the journal for a minor performance gain.
+    command: mongod --nojournal
     container_name: edx.devstack.mongo
-    image: mongo:4.0.24
+    image: mongo:4.2.17
     ports:
       - "27017:27017"
     volumes: