diff --git a/Dockerfile b/Dockerfile
index 5f71a42..4744ca4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,6 +23,9 @@
 RUN apt-get update && apt-get install -y openjdk-8-jre
 
 # Install necessary binaries to build brooklyn
+# Strictly speaking, rsync, gpg, tar, and zip are only necessary
+# if you are creating release artifacts, but they are fairly
+# low footprint
 RUN apt-get update && apt-get install -y \
     git-core \
     procps \
@@ -39,7 +42,11 @@
     dpkg \
     pkg-config \
     nasm \
-    gcc
+    gcc \
+    rsync \
+    gpg \
+    tar \
+    zip
 
 # Make sure the /.config && /.npm (for UI module builds) is writable for all users
 RUN mkdir -p /.config && chmod -R 777 /.config