Install gcloud and kubectl on semaphore-ci

semaphore_ci_gcloud_prepare.sh

#!/bin/bash

## Usage:
## IMPORTANT: GCLOUD_VERSION env variable set before running ex: export GCLOUD_VERSION=190.0.1
## curl https://gist.githubusercontent.com/dezmaeth/69af9ef1fc28989eda9dc6e0f91b2dfc/raw/semaphore_ci_gcloud_prepare.sh | sh

export PATH=$SEMAPHORE_CACHE_DIR/google-cloud-sdk/bin:$PATH

if [ ! -f "$SEMAPHORE_CACHE_DIR/google-cloud-sdk/bin/gcloud" ]
then
  curl -O https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk-$GCLOUD_VERSION-linux-x86_64.tar.gz
  tar -x -C $SEMAPHORE_CACHE_DIR -f google-cloud-sdk-$GCLOUD_VERSION-linux-x86_64.tar.gz
  gcloud --quiet components update --version $GCLOUD_VERSION
  gcloud --quiet components update --version $GCLOUD_VERSION beta
fi

if [ ! -f "$SEMAPHORE_CACHE_DIR/google-cloud-sdk/bin/kubectl" ]
then
  gcloud --quiet components update --version $GCLOUD_VERSION kubectl
fi