productionize docker-compose a bit more (#123)

* Gunicorn-ify compose - all services have 2 workers

* gitignore

* PR template a bit leaner

* Bump search to 1.4.1

.github/PULL_REQUEST_TEMPLATE.md

 ### Summary of Changes
 
-_Include a summary of changes then remove this line_
+<!-- _Include a summary of changes then, optionally, remove this line_ -->
 
 
 ### Documentation
 
-_What documentation did you add or modify and why? Add any relevant links then remove this line_
+<!-- _What documentation did you add or modify and why? Add any relevant links then optionally, remove this line_ -->
 
 ### CheckList
 Make sure you have checked **all** steps below to ensure a timely review.
 - [ ] PR title addresses the issue accurately and concisely.
 - [ ] PR includes a summary of changes.
-- [ ] I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)"
+- [ ] My commits follow the guidelines from "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)"

.gitignore

+example/backup/
+example/docker/neo4j/plugins/
+example/docker/es_data*

docker-amundsen.yml

@@ -14,6 +14,8 @@ services:
           - 7687:7687
       volumes:
           - ./example/docker/neo4j/conf:/conf
+          - ./example/docker/neo4j/plugins:/plugins
+          - ./example/backup:/backup          
       networks:
         - amundsennet
   elasticsearch:
@@ -21,10 +23,14 @@ services:
       container_name: es_amundsen
       ports:
           - 9200:9200
+# TODO - tried mounting ES data outside the volume. 
+# Not confident I did it right, I saw it acting up on restarts, plz halp!
+#      volumes:
+#          - ./example/docker/es_data:/usr/share/elasticsearch/data
       networks:
         - amundsennet
   amundsensearch:
-      image: amundsendev/amundsen-search:1.3.0
+      image: amundsendev/amundsen-search:1.4.1
       container_name: amundsensearch
       ports:
         - 5001:5000
@@ -34,6 +40,7 @@ services:
         - amundsennet
       environment:
         - PROXY_ENDPOINT=es_amundsen
+      command: gunicorn -w 2 --bind :5000 search_service.search_wsgi
   amundsenmetadata:
       image: amundsendev/amundsen-metadata:1.1.2
       container_name: amundsenmetadata
@@ -45,8 +52,9 @@ services:
         - amundsennet
       environment:
          - PROXY_HOST=bolt://neo4j_amundsen
+      command: gunicorn -w 2 --bind :5000 metadata_service.metadata_wsgi
   amundsenfrontend:
-      image: amundsendev/amundsen-frontend:1.0.9
+      image: amundsendev/amundsen-frontend:1.1.0
       container_name: amundsenfrontend
       depends_on:
         - amundsenmetadata
@@ -58,7 +66,12 @@ services:
       environment:
         - SEARCHSERVICE_BASE=http://amundsensearch:5000
         - METADATASERVICE_BASE=http://amundsenmetadata:5000
+        # Only for easy config-less Quickstart bookmark evalutation. `TestConfig` extends ordinary `LocalConfig` by
+        # defining `AUTH_USER_METHOD` to a hardcoded dummy user in `amundsen_application.tests.test_utils.get_test_user()`
+        # See further docs in https://github.com/lyft/amundsenfrontendlibrary/blob/master/docs/configuration.md#flask
+        # and https://github.com/lyft/amundsenfrontendlibrary/blob/master/docs/configuration.md#authentication
         - FRONTEND_SVC_CONFIG_MODULE_CLASS=amundsen_application.config.TestConfig
+      command: gunicorn -w 2 --bind :5000 amundsen_application.wsgi
 
 networks:
   amundsennet: