[doc] Improve docker-compose instruction

This code improves the instruction to run grimoirelab
via the docker-compose based on the feedback of
@hispanico.

Signed-off-by: Valerio Cosentino <valcos@bitergia.com>

README.md

@@ -55,7 +55,7 @@ foo@bar:~/grimoirelab $ docker run -p 127.0.0.1:5601:5601 \
 
 More details in the [docker folder](./docker/README.md).
 
-Your dashboard will be ready after a while in `https://localhost:5601`
+Your dashboard will be ready after a while in `http://localhost:5601`
 
 # GrimoireLab components
 

docker-compose/README.md

@@ -34,10 +34,22 @@ memory in the system, and to estimate file space usage, respectively.
 
 You should ensure [enough virtual memory for Elasticsearch](https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html) 
 (one of GrimoireLab components). You can do it running the following command as `root` in Linux or as administrator user in MacOS:
+
+## Linux
 ```console
 sysctl -w vm.max_map_count=262144
 ```
 
+## Mac
+```
+$ screen ~/Library/Containers/com.docker.docker/Data/vms/0/tty
+(then run:) sysctl -w vm.max_map_count=262144
+```
+
+Remember also to assign proper resources to Docker through the UI. 8GB Memory and 2GB Swap should work.
+
+![](./mac-docker-configuration.png)
+
 # Getting started in 3 steps
 
 1. Clone this project: