is from_secret working?

.drone.yml

@@ -4,10 +4,16 @@ type: docker
 name: build_lektor
 
 steps:
-  - name: ping registry
+  - name: env
     image: busybox
+    environment:
+      DOCKER_USERNAME:
+        from_secret: docker_username
+      DOCKER_PASSWORD:
+        from_secret: "{{ docker_password | sha256 }}"
     commands:
-      - ping -c 5 registry.wtf-eg.net
+      - echo ${DOCKER_USERNAME}
+      - echo ${DOCKER_PASSWORD} | sha256sum
   - name: build
     image: plugins/docker
     settings: