diff --git a/docker/ci/ubuntu/Dockerfile b/docker/ci/ubuntu/Dockerfile
index 56edc84e4322..5d4dd129a6f0 100644
--- a/docker/ci/ubuntu/Dockerfile
+++ b/docker/ci/ubuntu/Dockerfile
@@ -5,7 +5,6 @@ ARG DOCKER_BUILD_ROOT=.
 # The binary name of GreptimeDB executable.
 # Defaults to "greptime", but sometimes in other projects it might be different.
 ARG TARGET_BIN=greptime
-ENV TARGET_BIN=$TARGET_BIN
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     ca-certificates \
@@ -24,4 +23,6 @@ ADD $TARGETARCH/$TARGET_BIN /greptime/bin/
 
 ENV PATH /greptime/bin/:$PATH
 
+ENV TARGET_BIN=$TARGET_BIN
+
 ENTRYPOINT ["$TARGET_BIN"]