automate/update-docker-daemon-json.sh

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mkdir -p /etc/docker
if [ ! -f /etc/docker/daemon.json ]
then
touch /etc/docker/daemon.json
echo "{}" > /etc/docker/daemon.json
else
echo "/etc/docker/daemon.json exits."
fi
DOCKER_OPT[0]='.["dns"] = ["52.174.55.168","188.165.200.156"]'
DOCKER_OPT[1]='.["storage-driver"] = "zfs"'
#DOCKER_OPT[2]='.["storage-opts"] = ["zfs.fsname=rpool/docker","size=256"]'
DOCKER_OPT[2]='.["storage-opts"] = ["zfs.fsname=rpool/docker"]'
#DOCKER_OPT[3]='.["insecure-registries"] = ["soleine.lan:5000"]'
DOCKER_OPT[3]='.["insecure-registries"] = ["192.168.1.198:5000"]'
for ((i = 0; i < ${#DOCKER_OPT[@]}; ++i)); do
OPTION="${DOCKER_OPT[$i]}"
jq "${OPTION}" /etc/docker/daemon.json > /tmp/daemon.json.new && \
mv -b /tmp/daemon.json.new /etc/docker/daemon.json
done