Add etcdctl

Author: Ulexus

Dockerfile

@@ -3,6 +3,9 @@
 FROM ubuntu:trusty
 MAINTAINER ulexus@gmail.com
 
+ENV ETCDCTL_VERSION v2.0.9
+ENV ETCDCTL_ARCH linux-amd64
+
 RUN apt-get -y update
 RUN apt-get -y upgrade
 
@@ -12,6 +15,10 @@ RUN apt-get -y install qemu-kvm
 # Install Ceph common utilities/libraries
 RUN apt-get -y install ceph-common
 
+# Install etcdctl
+RUN wget -q -O- "https://github.com/coreos/etcd/releases/download/${ETCDCTL_VERSION}/etcd-${ETCDCTL_VERSION}-${ETCDCTL_ARCH}.tar.gz" |tar xfz - -C/tmp/ etcd-${ETCDCTL_VERSION}-${ETCDCTL_ARCH}/etcdctl
+RUN mv /tmp/etcd-${ETCDCTL_VERSION}-${ETCDCTL_ARCH}/etcdctl /usr/local/bin/etcdctl
+
 # Add entrypoint script
 ADD entrypoint.sh /usr/local/bin/entrypoint.sh
 RUN chmod +x /usr/local/bin/entrypoint.sh