#!/bin/bash -e
 
 DIST_TAG=$1
 DIST_VER=$2
 SPEC_DIR=$3
 STAGE_DIR=$4
 ARCH=x86_64
 
 #
 # Docker images for coredns
 #
 K8S_COREDNS_VER=`cat ${SPEC_DIR}/coredns/coredns.spec | grep Version | cut -d: -f2 | tr -d ' '`
 K8S_COREDNS_VER_REL=${K8S_COREDNS_VER}-`cat ${SPEC_DIR}/coredns/coredns.spec | grep Release | cut -d: -f2 | tr -d ' ' | cut -d% -f1`
 K8S_COREDNS_RPM=coredns-${K8S_COREDNS_VER_REL}${DIST_TAG}.${ARCH}.rpm
 K8S_COREDNS_RPM_FILE=${STAGE_DIR}/RPMS/x86_64/${K8S_COREDNS_RPM}
 K8S_COREDNS_TAR=coredns-v${K8S_COREDNS_VER_REL}.tar
 
 if [ ! -f ${K8S_COREDNS_RPM_FILE} ]
 then
     echo "Core DNS RPM ${K8S_COREDNS_RPM_FILE} not found. Exiting.."
     exit 1
 fi
 
 IMG_NAME=vmware/photon-${DIST_VER}-coredns-amd64:v${K8S_COREDNS_VER}
 
 IMG_ID=`docker images -q ${IMG_NAME} 2> /dev/null`
 if [[ ! -z "${IMG_ID}" ]]; then
     echo "Removing image ${IMG_NAME}"
     docker rmi -f ${IMG_NAME}
 fi
 
 mkdir -p tmp
 cp ${K8S_COREDNS_RPM_FILE} tmp
 pushd ./tmp
 rpm2cpio ${K8S_COREDNS_RPM} | cpio -vid
 popd
 
 docker build --rm -t ${IMG_NAME} -f ./Dockerfile.coredns .
 docker save -o ${K8S_COREDNS_TAR} ${IMG_NAME}
 gzip ${K8S_COREDNS_TAR}
 mv -f ${K8S_COREDNS_TAR}.gz ${STAGE_DIR}/docker_images/
 
 rm -rf ./tmp