enabling dumb-init for shovel

Change-Id: I6bb546c21866f4b6d8f1095079f288945080396d
diff --git a/docker/Dockerfile.base b/docker/Dockerfile.base
index ee20521..8e5c09b 100644
--- a/docker/Dockerfile.base
+++ b/docker/Dockerfile.base
@@ -23,14 +23,16 @@
 
 # Update to have latest images
 RUN apt-get update && \
-    apt-get install -y python python-pip openssl iproute2 libpcap-dev
+    apt-get install -y python python-pip openssl iproute2 libpcap-dev wget
 
 COPY requirements.txt /tmp/requirements.txt
 
 # pip install cython enum34 six && \
 # Install app dependencies
-RUN apt-get install -y wget build-essential make gcc binutils python-dev libffi-dev libssl-dev git && \
+RUN wget https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb && \
+    dpkg -i *.deb && \
+    rm -f *.deb && \
+    apt-get install -y wget build-essential make gcc binutils python-dev libffi-dev libssl-dev git && \
     pip install -r /tmp/requirements.txt && \
     apt-get purge -y wget build-essential make gcc binutils python-dev libffi-dev libssl-dev git && \
     apt-get autoremove -y
-