add install script for minikube

bin/install-minikube-system

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -e
+
+MINIKUBE_VERSION=${MINIKUBE_VERSION:-v1.9.2}
+
+PREFIX_DIR=/usr/local
+BIN_DIR=${PREFIX_DIR}/bin
+
+MINIKUBE_PREFIX_DIR=${PREFIX_DIR}/apps/minikube
+MINIKUBE_DEST_DIR=${MINIKUBE_PREFIX_DIR}/${MINIKUBE_VERSION}
+MINIKUBE_CURRENT=${MINIKUBE_PREFIX_DIR}/current
+
+if [[ $(uname) =~ Linux ]]; then
+    OS=linux
+elif [[  $(uname) =~ Darwin ]]; then
+    OS=darwin
+else
+    echo unsupported os: $(uname)
+    exit 1
+fi
+
+ARCH=
+if [[ $(uname -m) == x86_64 ]]; then
+    ARCH=amd64
+else
+    echo arch not yet supported: $(uname -m)
+    exit 1
+fi
+
+TMP_DIR=
+if [[ ! -d ${MINIKUBE_DEST_DIR} ]]; then
+    sudo mkdir -p ${MINIKUBE_DEST_DIR}
+    TMP_DIR=$(mktemp --directory)
+    DEST_FILE=${TMP_DIR}/minikube
+    URL=https://github.com/kubernetes/minikube/releases/download/${MINIKUBE_VERSION}/minikube-${OS}-${ARCH}
+    echo downloading minikube ${MINIKUBE_VERSION} to temp directory ${TMP_DIR}
+    curl --silent --location --output ${DEST_FILE} ${URL}
+
+    sudo chmod 755 ${DEST_FILE}
+    sudo mv ${DEST_FILE} ${MINIKUBE_DEST_DIR}
+    sudo chown --recursive root:root ${MINIKUBE_DEST_DIR}
+else
+    echo minikube ${MINIKUBE_VERSION} already installed
+fi
+
+cd ${MINIKUBE_PREFIX_DIR}
+[[ -s current ]] && sudo unlink current
+sudo ln --symbolic ${MINIKUBE_VERSION}/ current
+echo current version set to ${MINIKUBE_VERSION}
+cd ${BIN_DIR}
+[[ -L ${BIN_DIR}/minikube ]] || sudo ln --symbolic ${MINIKUBE_CURRENT}/minikube
+
+if [[ $TMP_DIR != "" ]]; then
+    rm -rf ${TMP_DIR}
+    echo removed up temp directory ${TMP_DIR}
+fi