Get the ip address of a docker container (with optional network argument)

docker-get-ip.sh

#!/usr/bin/env bash


if [ ! -z "$2" ]; then
  command="docker inspect -f {{.NetworkSettings.Networks.$2.IPAddress}} $1"
  # echo $command
  result=`$command`
else
  comand="docker inspect -f {{.NetworkSettings.IPAddress}} $1"
  # echo $command
  result=`$command`
fi

if [ "$result" == "<no value>" ]; then
  echo "no value found, are you sure your network is correct? (use docker inspect -f {{.NetworkSettings}} to see what's up)"
elif [ ${#result} -lt 8 ]; then
  echo "no ip found... (docker inspect -f {{.NetworkSettings}} may be useful)"
else
  # echo ${#result}
  echo $result
fi

Modified -f placement to make it more cross-version compatible (I think)