diff --git a/docker/Dockerfile b/docker/Dockerfile
index 0ccf262..527f0b4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -54,11 +54,11 @@ RUN npm install --global grunt-cli
 # RUN echo "//<npm-registry>:8080/:_authToken=KB9DEBiM5vNeGPwinPuj" > ~/.npmrc
 
 # Take an SSH key as a build argument.
-# ARG SSH_PRIVATE_KEY
+ARG SSH_PRIVATE_KEY
 ARG BUILD_TOKEN
 # RUN echo exit 0 > /usr/sbin/policy-rc.d
 
-# RUN apt-get update && apt-get install -y openssh-server
+RUN apt-get update && apt-get install -y openssh-server
 # 1. Create the SSH directory.
 # 2. Populate the private key file.
 # 3. Set the required permissions.