diff --git a/Dockerfile b/Dockerfile
index df67e8e..cd8f070 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ RUN groupadd -g 281 docker
 RUN usermod -aG docker jenkins
 
 # Install tea
+RUN apt-get update && apt-get install -y build-essential
 RUN git clone https://gitea.com/gitea/tea.git
 RUN cd tea && make && make install