diff --git a/scripts/build/Dockerfile.tmpl b/scripts/build/Dockerfile.tmpl
index d62ab1501..42f01b362 100644
--- a/scripts/build/Dockerfile.tmpl
+++ b/scripts/build/Dockerfile.tmpl
@@ -1,10 +1,6 @@
 ARG CC=gcc
 
-RUN apt-get clean
-
-RUN apt-get update
-
-RUN apt-get install -y \
+RUN apt-get update && apt-get install -y \
                 build-essential \
                 protobuf-c-compiler \
                 libprotobuf-c0-dev \