Update Dockerfile

Author: Peefy

Dockerfile

@@ -11,7 +11,7 @@ COPY --from=build /src/bin/kcl /usr/local/bin/kcl
 RUN /usr/local/bin/kcl
 RUN cp -r /root/go/bin/* /usr/local/bin/
 RUN apt-get update
-RUN apt-get install gcc -y
+RUN apt-get install gcc git -y
 # The reason for doing this below is to prevent the
 # container from not having write permissions.
 ENV KCL_GO_DISABLE_ARTIFACT=on