include circle ci env vars in docker env

.circleci/config.yml

@@ -45,6 +45,7 @@ jobs:
           name: Run tests
           command: |
             docker-compose -f config/docker/compose.yml exec web bash -c 'curl -o /tmp/circleci https://circle-downloads.s3.amazonaws.com/releases/build_agent_wrapper/circleci && chmod +x /tmp/circleci'
+            docker-compose -f config/docker/compose.yml exec web bash -c '/tmp/circleci tests glob "test/**/*_test.rb" | /tmp/circleci tests split | xargs echo'
             docker-compose -f config/docker/compose.yml exec web bash -c '/tmp/circleci tests glob "test/**/*_test.rb" | /tmp/circleci tests split | xargs bin/rails test'
       - store_test_results:
           path: test/reports

config/docker/compose.yml

@@ -49,6 +49,9 @@ services:
       - DANBOORU_NICO_SEIGA_LOGIN
       - DANBOORU_NICO_SEIGA_PASSWORD
       - DANBOORU_PERSIST_PIXIV_SESSION
+      - CIRCLE_NODE_TOTAL
+      - CIRCLE_NODE_INDEX
+      - CIRCLE_BUILD_IMAGE
     build: 
       context: ../..
       dockerfile: config/docker/danbooru-ci