fix: [host] force docker version for support of registry v1

precise/host/hooks/install.d/60-docker.sh

@@ -5,3 +5,13 @@ if ! type -p docker; then
     echo "Installing docker..."
     curl -sSL https://get.docker.io | sh
 fi
+
+version="$(apt-cache madison docker-ce | cut -f 2 -d \| | grep 17.06 | head -n 1 | xargs echo)"
+## DOWNGRADE to 17.xx because 18.xx do not support registry v1
+apt-get install -y --force-yes docker-ce="$version"
+
+if ! egrep 'disable-legacy-registry' /lib/systemd/system/docker.service 2>/dev/null; then
+    sed -ri 's/^(ExecStart=.*)$/\1 --disable-legacy-registry=false/g' /lib/systemd/system/docker.service
+fi
+systemctl daemon-reload &&
+service docker restart