Use Linux bridge to connect Docker containers to the same subnet as the host

bridge.sh

#!/bin/bash
BRIDGE_NAME=dbridge
PHYS_IF=eth0
SUBNET=192.168.1.0
NETMASK=255.255.255.0
GATEWAY=192.168.1.1

sudo brctl addbr $BRIDGE_NAME
sudo brctl addif $BRIDGE_NAME $PHYS_IF
sudo ifconfig $BRIDGE_NAME up
sudo route add -net 0.0.0.0 gw $GATEWAY netmask 0.0.0.0 dev $BRIDGE_NAME
sudo dhclient -v $BRIDGE_NAME

container.sh

#!/bin/bash
DOCKER_IMAGE=$1
COMMAND=$2
BRIDGE_NAME=dbridge
VIF_NAME=$3
SUBNET_MASK=192.168.1.0/24
IP_ADDRESS=$4
GATEWAY=192.168.1.1

container_id=`docker run --net=none -d $DOCKER_IMAGE $COMMAND`

pid=`docker inspect -f '{{.State.Pid}}' $container_id`
sudo mkdir -p /var/run/netns
sudo ln -s /proc/$pid/ns/net /var/run/netns/$pid

sudo ip link add $VIF_NAME type veth peer name ${VIF_NAME}bis
sudo brctl addif $BRIDGE_NAME $VIF_NAME
sudo ip link set $VIF_NAME up
sudo ip link set ${VIF_NAME}bis netns $pid
sudo ip netns exec $pid ip link set dev ${VIF_NAME}bis name eth0
sudo ip netns exec $pid ip link set eth0 up

sudo ip netns exec $pid ip route add $SUBNET_MASK dev eth0
sudo ip netns exec $pid ip route add 0.0.0.0/0 via $GATEWAY dev eth0
sudo ip netns exec $pid ip addr add $IP_ADDRESS dev eth0