Update ELK Stack container files

tools/docker-compose/README.md

@@ -2,12 +2,16 @@
 
 ## How to start the Dev container
 
-In the root directory of your awx clone, run the following to build your docker image:
+In the root directory of your awx clone, run the following to build your docker image.  
+This step takes a while, but once your image is built, you don't need to do this again 
+unless you make changes to the Dockerfile or any of the files used by the Dockerfile.  
 
 ```
 make docker-compose-build
 ```
 
+> Note: By default, this image will be tagged with your branch name.  
+
 Copy over your local settings 
 
 ```
@@ -26,6 +30,8 @@ Run the container
 make docker-compose
 ```
 
+> Note: You may need to add `COMPOSE_TAG=<yourbranch>` at the end of this to use the correct image for your branch.  
+
 The app should now be accessible in your browser at `https://localhost:8043/#/home`
 
 
@@ -74,3 +80,7 @@ An example of how to view the most recent logs from the container:
 ```
 docker exec -i -t $(docker ps -aqf "name=tools_logstash_1") tail -n 50 /logstash.log
 ```
+
+#### How to add logstash plugins
+
+Add any plugins you need in `tools/elastic/logstash/Dockerfile` before running the container.  

tools/elastic/README.md

@@ -16,6 +16,7 @@ done by getting via bash in the running Docker machine. Example:
 ```bash
 docker-machine ssh default sudo sysctl -w vm.max_map_count=262144
 ```
+> Note: If you are running docker natively on linux, you need only run `sysctl -w vm.max_map_count=262144`
 
 After this, the containers can be started up with commands like:
 

tools/elastic/docker-compose.logstash-link.yml

@@ -1,7 +1,7 @@
 ---
 version: '2'
 services:
-  # Primary Tower Development Container
+  # Primary AWX Development Container
-  tower:
+  awx:
     links:
       - logstash