diff --git a/Makefile b/Makefile
index 28ece84..f7489ae 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,8 @@ show-version:
 
 DOCKER_IMAGE := linkacloud/d2vm
 
+docker: docker-build docker-push
+
 docker-push:
 	@docker image push -a $(DOCKER_IMAGE)
 
diff --git a/examples/alpine.Dockerfile b/examples/alpine.Dockerfile
index 5d22a7a..75c994e 100644
--- a/examples/alpine.Dockerfile
+++ b/examples/alpine.Dockerfile
@@ -1,4 +1,4 @@
 FROM alpine
 
-RUN apk add --no-cache && \
+RUN apk add --no-cache openssh-server && \
     echo "PermitRootLogin yes" >> /etc/ssh/sshd_config