Logstash wont start

[UIC]

Trying to start the ELK stack but Logstash wont start, see below:

[Step 4]: Start instance ...
start 'docker-compose.yml' services.
Creating docker-elk-syslog_elasticsearch_1 ... done
Creating docker-elk-syslog_kibana_1        ...
Creating docker-elk-syslog_logstash_1      ... error

Creating docker-elk-syslog_kibana_1        ... done
yslog_host: Temporary failure in name resolution

ERROR: for logstash  Cannot start service logstash: failed to initialize logging driver: dial tcp: lookup syslog_host: Temporary failure in name resolution
ERROR: Encountered errors while bringing up the project.

Cloned to a frech installed vanilla Ubuntu 18.04.

regards
Håkan

[dimartiro-py]

Same issue here