diff --git a/docker/Dockerfile.ubuntu b/docker/Dockerfile.ubuntu
index 86253c0f..1a255536 100644
--- a/docker/Dockerfile.ubuntu
+++ b/docker/Dockerfile.ubuntu
@@ -16,8 +16,6 @@ RUN pip config set global.index-url https://mirrors.aliyun.com/pypi/simple && \
     pip config set install.trusted-host mirrors.aliyun.com && \
     cp /tmp/resources/ubuntu2204.aliyun /etc/apt/sources.list
 
-RUN echo "cache bust $(date +%Y%m%d%H%M%S)"
-
 COPY {meta_file} /tmp/install.sh
 
 RUN sh /tmp/install.sh {version_args}