fix env variables

.drone.yml

@@ -16,15 +16,12 @@ steps:
   image: xoxys/molecule:gce
   commands:
   - /bin/bash /docker-entrypoint.sh
-  - set -x
-  - "echo \"$GCE_CREDENTIALS_JSON\" > $GCE_CREDENTIALS_FILE"
-  - ls -l
   - molecule create --scenario-name gce-centos-7
   - molecule converge --scenario-name gce-centos-7
   - molecule verify --scenario-name gce-centos-7
   - molecule destroy --scenario-name gce-centos-7
   environment:
-    GCE_CREDENTIALS_FILE: $HOME/ansible-testing.json
+    GCE_CREDENTIALS_FILE: /root/ansible-testing.json
     GCE_CREDENTIALS_JSON:
       from_secret: gce_credentials_json
     GCE_PROJECT_ID: