Merge pull request #2 from cordon-thiago/fix/spark-version

Fixed Jupyter spark version and org.apache.spark:spark-sql-kafka lib version.

Author: cordon-thiago

docker/docker-compose.yml

@@ -15,11 +15,11 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
   spark:
-    image: jupyter/all-spark-notebook
+    image: jupyter/all-spark-notebook:spark-3.1.1
     ports:
       - "8888:8888"
       - "4040-4080:4040-4080"
     links:
       - "kafka:kafka-server" #allows spark notebook to discover kafka service by name "kafka-server"
     volumes:
-      - ../notebooks:/home/jovyan/work/notebooks/
+      - ../notebooks:/home/jovyan/work/notebooks/