dlite-seamless-networking.sh

#!/usr/bin/env bash

set -e

sudo route -n delete 172.17.0.0/16
sudo route -n add 172.17.0.0/16 local.docker

DOCKER_INTERFACE=$(route get local.docker | grep interface: | cut -f 2 -d: | tr -d ' ')
DOCKER_INTERFACE_MEMBERSHIP=$(ifconfig "${DOCKER_INTERFACE}" | grep member: | cut -f 2 -d: | cut -c 2-4)

if [ -z "$DOCKER_INTERFACE_MEMBERSHIP" ]; then
	echo -e "Could not find 'member:' in \`ifconfig ${DOCKER_INTERFACE}\` output.\n"
	echo -e "Try restarting \`dlite\`:\n"
	echo -e "    dlite stop && dlite start\n"
	exit 1
fi

sudo ifconfig "${DOCKER_INTERFACE}" -hostfilter "${DOCKER_INTERFACE_MEMBERSHIP}"

DOCKER_CONTAINER_IP=$(docker inspect -f '{{.NetworkSettings.IPAddress}}' "$(docker ps -q | head -1)")
ping -c 1 "${DOCKER_CONTAINER_IP}"