diff --git a/aenv/src/cli/cmds/build.py b/aenv/src/cli/cmds/build.py
index 33f0510..c9d3fd0 100644
--- a/aenv/src/cli/cmds/build.py
+++ b/aenv/src/cli/cmds/build.py
@@ -128,6 +128,9 @@ def build(
 
     This command builds Docker images from your project and provides
     real-time progress updates with beautiful UI components.
+    Note that this command requires the docker package to be installed.
+    You can install it by running:
+    `pip install docker` or `uv pip install docker`.
 
     Examples:
         aenv build