chore: removed dockerfile & workflow file

.github/docker-compose-github.yml

@@ -3,6 +3,7 @@ version: "2.1"
 services:
   es:
     image: elasticsearch:1.5.2
+
   analyticsapi:
     image: edxops/analytics_api:${DATA_API_VERSION:-latest}
     container_name: analytics_api
@@ -11,22 +12,15 @@ services:
       ELASTICSEARCH_LEARNERS_INDEX: 'learner'
       ELASTICSEARCH_LEARNERS_UPDATE_INDEX: 'index_update'
     command: /edx/app/analytics_api/venvs/analytics_api/bin/python /edx/app/analytics_api/analytics_api/manage.py runserver 0.0.0.0:80 --settings analyticsdataserver.settings.local
+
   insights:
-    # Use this image once the Python version upgrade is complete
-    # image: edxops/insights:latest
-    build:
-      context: ../.
-      target: dev
-      args:
-        PYTHON_VERSION: "${PYTHON_VERSION}"
+    image: edxops/insights:latest
     container_name: insights_testing
     volumes:
       - ..:/edx/app/insights/edx_analytics_dashboard
     command: tail -f /dev/null
     environment:
-      # Pull these from the host environment.
       DATADOG_API_KEY:
-      # Rest of the environment variables for testing.
       API_SERVER_URL: http://analyticsapi/api/v0
       API_AUTH_TOKEN: edx
       LMS_HOSTNAME: lms