With the switch from CentOS to Ubuntu the https://github.com/elastic/beats/blob/main/dev-tools/packaging/templates/docker/docker-entrypoint.tmpl#L13 does not work as expected. This is because that Ubuntu uses mawk instead of gawk. This change results in the output of the awk to be incorrect.

For confirmed bugs, please report:

• Version: 7.17.0
• Operating System: Docker Container
• Discuss Forum URL:
• Steps to Reproduce:

docker run -it docker.elastic.co/beats/filebeat setup does not actually run setup