diff --git a/README.md b/README.md
index 2c9de2349..885197927 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,13 @@ Hydra Lab offers an out-of-box experience of the Docker image, and we call it `U
 
 **Step 1. Download and install [Docker](https://www.docker.com)**
 
-**Step 2. Run on your machine**
+**Step 2. Download latest Uber Docker image**
+```bash
+docker pull ghcr.io/microsoft/hydra-lab-uber:latest
+```
+**This step is necessary.** Without this step and jump to step 3, you may target at the local cached Docker image with `latest` tag if it exists.
+
+**Step 3. Run on your machine**
 
 By Default, Hydra Lab will use the local file system as a storage solution, and you may type the following in your terminal to run it:
 
diff --git a/agent/src/main/resources/application-docker.yml b/agent/src/main/resources/application-docker.yml
index 36ee2c9e5..2034cfffc 100644
--- a/agent/src/main/resources/application-docker.yml
+++ b/agent/src/main/resources/application-docker.yml
@@ -6,4 +6,6 @@ app:
   adb:
     # Official doc about this hostname: https://docs.docker.com/desktop/networking/#i-want-to-connect-from-a-container-to-a-service-on-the-host
     host: host.docker.internal
-    port: 5037
\ No newline at end of file
+    port: 5037
+  registry:
+    schema: "ws"
\ No newline at end of file