setup_docker_dnsmasq.sh

#!/bin/bash

# provide semi-automatic dns to docker container
# just call this script


DNSMASQ_CONF_DIR=/etc/dnsmasq.d
PRIMARY_DOMAIN=ms.foo


# get all containers
CONTAINER_IDS=$(docker ps | tail -n +2 | awk '{ print $1}')


function get_name {
    id=$1

    docker inspect $id | jq ".[0].Name" | tr -d '/"'
}

function get_ip {
    name=$1

    docker inspect $name | jq ".[0].NetworkSettings.IPAddress" | tr -d '"'
}


# get container names
CONTAINER_NAMES=$(for id in $CONTAINER_IDS; do get_name $id; done)


# create dnsmasq entries
for id in $CONTAINER_IDS; do
    name=$(get_name $id)
    ip=$(get_ip $id)

    # create file
    echo "host-record=$name.$PRIMARY_DOMAIN,$ip" > $DNSMASQ_CONF_DIR/docker-$name.conf
done;