Volumes are created on every docker start (laradock#2247)

* Added graylog to the list of softwares.

* Added persistent volumes for docker-in-docker and graylog.

Added volume for mongo configdb.
These services were making volumes on every start, so we might end up with many unnecessary volumes.
With this pull request this issue is resolved.

Author: StefanT123

docker-compose.yml

@@ -47,6 +47,10 @@ volumes:
     driver: ${VOLUMES_DRIVER}
   cassandra:
     driver: ${VOLUMES_DRIVER}
+  graylog:
+    driver: ${VOLUMES_DRIVER}
+  dind:
+    driver: ${VOLUMES_DRIVER}
 
 services:
 
@@ -503,6 +507,7 @@ services:
         - "${MONGODB_PORT}:27017"
       volumes:
         - ${DATA_PATH_HOST}/mongo:/data/db
+        - ${DATA_PATH_HOST}/mongo_config:/data/configdb
       networks:
         - backend
 
@@ -936,9 +941,9 @@ services:
           - ${GRAYLOG_GELF_TCP_PORT}:12201
           # GELF UDP
           - ${GRAYLOG_GELF_UDP_PORT}:12201/udp
-        user: root
+        user: graylog
         volumes:
-          - ./graylog/config:/usr/share/graylog/data/config
+          - ${DATA_PATH_HOST}/graylog:/usr/share/graylog/data
         networks:
           - backend
 
@@ -1218,6 +1223,7 @@ services:
       privileged: true
       volumes:
         - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}
+        - ${DATA_PATH_HOST}/dind:/var/lib/docker
       expose:
         - 2375
       networks: