Security patch: update base alpine image (#33)

* Apply security fixes: update base alpine image
* timeout binary -t flag deprecated fix

Author: alex-codefresh

Dockerfile

@@ -12,7 +12,7 @@ RUN curl -o kubectl1.10 -L https://storage.googleapis.com/kubernetes-release/rel
 RUN curl -o kubectl1.6 -L https://storage.googleapis.com/kubernetes-release/release/v1.6.0/bin/linux/amd64/kubectl
 
 
-FROM alpine:3.6
+FROM alpine:3.10
 
 RUN apk add --update bash
 

cf-deploy-kubernetes.sh

@@ -117,6 +117,6 @@ kubectl --context "${KUBECONTEXT}" --namespace "${KUBERNETES_NAMESPACE}" $KUBECT
 
 if [ -n "$DEPLOYMENT_NAME" ]; then
     echo "---> Waiting for a successful deployment/${DEPLOYMENT_NAME} status to namespace ${KUBERNETES_NAMESPACE} ..."
-    timeout -s SIGTERM -t $KUBERNETES_DEPLOYMENT_TIMEOUT kubectl --context "${KUBECONTEXT}" --namespace "${KUBERNETES_NAMESPACE}" rollout status deployment/"${DEPLOYMENT_NAME}" || fatal "Deployment Failed"
+    timeout -s SIGTERM $KUBERNETES_DEPLOYMENT_TIMEOUT kubectl --context "${KUBECONTEXT}" --namespace "${KUBERNETES_NAMESPACE}" rollout status deployment/"${DEPLOYMENT_NAME}" || fatal "Deployment Failed"
 fi