How to fix a ConsumePartition in Golang Sarama - docker

Question

I'm doing tests with Kafka and Golang
I'm using:
Docker:
https://hub.docker.com/r/bitnami/kafka
Sarama:
https://github.com/Shopify/sarama
The example is very simple is a Consumer that connects to Kafka:
https://godoc.org/github.com/Shopify/sarama#example-Consumer
The code is this:
package main
import (
"log"
"os"
"os/signal"
"github.com/Shopify/sarama"
)
func main() {
consumer, err := sarama.NewConsumer([]string{"localhost:9092"}, nil)
if err != nil {
panic(err)
}
defer func() {
if err := consumer.Close(); err != nil {
log.Fatalln(err)
}
}()
partitionConsumer, err := consumer.ConsumePartition("my_topic", 0, sarama.OffsetNewest)
if err != nil {
panic(err)
}
defer func() {
if err := partitionConsumer.Close(); err != nil {
log.Fatalln(err)
}
}()
// Trap SIGINT to trigger a shutdown.
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt)
consumed := 0
ConsumerLoop:
for {
select {
case msg := <-partitionConsumer.Messages():
log.Printf("Consumed message offset %d\n", msg.Offset)
consumed++
case <-signals:
break ConsumerLoop
}
}
log.Printf("Consumed: %d\n", consumed)
}
but when executing:
go run main.go
It shows me the following error:
panic: dial tcp: lookup fd6ee3862a45: no such host
goroutine 1 [running]:
main.main()
/Users/vn0sgkq/go/src/github.com/hectorgool/kafka1/main.go:25 +0x3f1
exit status 2
The repo is here:
https://github.com/hectorgool/kafka1/blob/master/main.go#L25
Yes, I know that I am missing the producer for the messages, but the strange thing is that: consumer.ConsumePartition
is not working