install docker client during bootstrap

.circleci/bootstrap.sh

@@ -16,4 +16,11 @@
 set -euo pipefail
 
 apt-get update -y && apt-get install -yq zip socat
+
+echo "Install docker client"
+VER="17.09.0-ce"
+curl -L -o /tmp/docker-$VER.tgz https://download.docker.com/linux/static/stable/x86_64/docker-$VER.tgz
+tar -xz -C /tmp -f /tmp/docker-$VER.tgz
+mv /tmp/docker/* /usr/bin
+
 make bootstrap

.circleci/deploy.sh

@@ -33,12 +33,6 @@ else
   exit
 fi
 
-echo "Install docker client"
-VER="17.09.0-ce"
-curl -L -o /tmp/docker-$VER.tgz https://download.docker.com/linux/static/stable/x86_64/docker-$VER.tgz
-tar -xz -C /tmp -f /tmp/docker-$VER.tgz
-mv /tmp/docker/* /usr/bin
-
 echo "Install gcloud components"
 export CLOUDSDK_CORE_DISABLE_PROMPTS=1
 curl https://sdk.cloud.google.com | bash