diff --git a/docker/docker-entrypoint b/docker/docker-entrypoint
index 8c111fe..c21416c 100755
--- a/docker/docker-entrypoint
+++ b/docker/docker-entrypoint
@@ -26,6 +26,7 @@ if [ "$(id -u)" -eq '0' ];then
     # ln -s ./g++-6 g++
     # ls -l
     # cat /etc/passwd
+    apt install cmake -y
     exec gosu user docker/entrypoint
 
 fi
diff --git a/docker/entrypoint b/docker/entrypoint
index 3282854..7e6a346 100755
--- a/docker/entrypoint
+++ b/docker/entrypoint
@@ -1,5 +1,4 @@
 #!/bin/bash
-apt install cmake -y
 gcc --version
 g++ --version
 cmake --verion