diff --git a/worker/Dockerfile b/worker/Dockerfile
index 81f4294115..37ab88d260 100644
--- a/worker/Dockerfile
+++ b/worker/Dockerfile
@@ -26,6 +26,9 @@ ENV LANG="C.UTF-8"
 ENV CC="clang"
 ENV CXX="clang++"
 
+ENV MEDIASOUP_LOCAL_DEV=true
+ENV KEEP_BUILD_ARTIFACTS=1
+
 WORKDIR /mediasoup
 
 CMD ["bash"]
diff --git a/worker/Dockerfile.alpine b/worker/Dockerfile.alpine
index d1b31a6062..c90d2b82a4 100644
--- a/worker/Dockerfile.alpine
+++ b/worker/Dockerfile.alpine
@@ -9,6 +9,9 @@ ENV LANG="C.UTF-8"
 ENV CC="gcc"
 ENV CXX="g++"
 
+ENV MEDIASOUP_LOCAL_DEV=true
+ENV KEEP_BUILD_ARTIFACTS=1
+
 WORKDIR /mediasoup
 
 CMD ["ash"]