Updated docker-compose

- Exposing Elasticsearch ports
- Corrected course-discovery image tag
- Documented installation of elasticsearch-head

ECOM-2886

docker-compose.yml

@@ -10,6 +10,9 @@ es:
   container_name: es
   volumes:
     - /tmp/elasticsearch/data:/es-data
+  ports:
+    - "9200:9200"
+    - "9300:9300"
 
 memcache:
   image: memcached:1.4.24
@@ -21,7 +24,7 @@ memcache:
 
 course-discovery:
   # Uncomment this line to use the official course-discovery base image
-  image: edxops/course-discovery:v1
+  image: edxops/course-discovery:latest
 
   # Uncomment the next two lines to build from a local configuration repo
   #build: ../configuration
@@ -34,4 +37,4 @@ course-discovery:
   ports:
     - "18381:18381"
     - "8381:8381"
-    - "48381:48381"
\ No newline at end of file
+    - "48381:48381"

docs/getting_started.rst

@@ -84,3 +84,15 @@ services that it depends on.
     $ make start-devstack
 
 .. _Docker Compose: https://docs.docker.com/compose/
+
+
+Install elasticsearch-head
+--------------------------
+Navigating Elasticsearch can be challenging if you don't have much experience with it. The `elasticsearch-head`_ plugin
+offers a web-based front end to help with this. The plugin can be installed in the `es` container with the command below.
+
+.. code-block:: bash
+
+    $ docker exec es /usr/share/elasticsearch/bin/plugin -install mobz/elasticsearch-head
+
+.. _elasticsearch-head: https://mobz.github.io/elasticsearch-head/