config env variable

Author: martham93

.circleci/config.yml

@@ -11,7 +11,7 @@ common: &common
         command: .circleci/install_tippecanoe.sh
     - run:
         name: imagery token
-        command: IMAGE_TOKEN="${IMAGE_TOKEN}"
+        command: IMAGE_TOKEN=$IMAGE_TOKEN
     - run:
         name: run tox
         command: ~/.local/bin/tox