diff --git a/Dockerfile b/Dockerfile
index 2f380e3..a7e8fa4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,6 +18,5 @@ RUN curl -L -o elm-format.tgz https://mirror.ghproxy.com/https://github.com/avh4
 # install joint-teapot
 RUN pip install git+https://mirror.ghproxy.com/https://github.com/BoYanZh/Joint-Teapot
 
-# TODO: install elf & joj3 & other binarys
-
-COPY bin/* /usr/local/bin/
+# install joj3 binary
+COPY bin/joj3 /usr/local/bin/
diff --git a/README.md b/README.md
index 9745e83..1353ab2 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,4 @@ Check <https://gitea.com/gitea/runner-images> for information about base images.
 
 ## `/bin` directory
 
-Currently, we have placed various binary files in the `/bin` directory that cannot be publicly downloaded. These files include `dummy`, `elf`, `healthcheck`, and `joj3` for now.
+Currently, we have placed various binary files in the `/bin` directory that cannot be publicly downloaded. These files include `dummy`, `healthcheck`, and `joj3` for now.