fixing drone

.drone.yml

@@ -9,6 +9,9 @@ trigger:
 steps:
   - name: key-setup
     image: ubuntu:latest
+    environment:
+      NGINX_KEY:
+        from_secret: NGINX_KEY
     commands:
       - echo "$NGINX_KEY" > id_rsa
 
@@ -16,8 +19,6 @@ steps:
     image: plugins/docker
     depends_on:
       - key-setup
-    commands:
-      - ls
     settings:
        dockerfile: Dockerfile
        context: .