Changed Dockerfile with new Github project name.

The Github project name was changed to "kube-bench" so there was a need to modify
Dockerfile references.
Also modified the text output of the entrypoint to be friendlier.

Dockerfile

 FROM golang:1.4.1
 RUN mkdir /kube-bench
 WORKDIR /kube-bench
-RUN wget https://raw.githubusercontent.com/aquasecurity/kubernetes-bench-security/master/cfg/config.yaml && \
-    wget https://raw.githubusercontent.com/aquasecurity/kubernetes-bench-security/master/cfg/federated.yaml && \
-    wget https://raw.githubusercontent.com/aquasecurity/kubernetes-bench-security/master/cfg/master.yaml && \
-    wget https://raw.githubusercontent.com/aquasecurity/kubernetes-bench-security/master/cfg/node.yaml
-RUN go get github.com/aquasecurity/kubernetes-bench-security
-RUN cp /go/bin/kubernetes-bench-security /kube-bench/ && chmod +x /kube-bench/kubernetes-bench-security
+RUN wget https://raw.githubusercontent.com/aquasecurity/kube-bench/master/cfg/config.yaml && \
+    wget https://raw.githubusercontent.com/aquasecurity/kube-bench/master/cfg/federated.yaml && \
+    wget https://raw.githubusercontent.com/aquasecurity/kube-bench/master/cfg/master.yaml && \
+    wget https://raw.githubusercontent.com/aquasecurity/kube-bench/master/cfg/node.yaml
+RUN go get github.com/aquasecurity/kube-bench
+RUN cp /go/bin/kubernetes-bench /kube-bench/ && chmod +x /kube-bench/kube-bench
 
 FROM alpine:latest
 RUN mkdir -p /kube-bench/cfg
-COPY --from=0 /kube-bench/kubernetes-bench-security /kube-bench/kube-bench
+COPY --from=0 /kube-bench/kube-bench /kube-bench/kube-bench
 COPY --from=0 /kube-bench/config.yaml /kube-bench/cfg/config.yaml
 COPY --from=0 /kube-bench/federated.yaml /kube-bench/cfg/federated.yaml
 COPY --from=0 /kube-bench/master.yaml /kube-bench/cfg/master.yaml

entrypoint.sh

@@ -3,7 +3,10 @@ if [ -d /host ]; then
   mkdir -p /host/cfg/
   yes | cp -rf ./kube-bench/cfg/* /host/cfg/
   yes | cp -rf ./kube-bench/kube-bench /host/
-  echo "=== You can now run ./kube-bench from your host ==="
+  echo "==============================================="
+  echo "kube-bench is now installed on your host       "
+  echo "Run ./kube-bench to perform a security check   "
+  echo "==============================================="
 else
   echo "Usage:"
   echo "  docker run --rm -v \`pwd\`:/host aquasec/kube-bench"