Additional Erroroutput for docker-compose config

[Tobias-HRZ]

Describe the Bug

I was working on my docker-compose.yaml and had a dependence issue. But the error-message I received was very cryptic:

"Could not evaluate: undefined method `[]' for false:FalseClass"

I could identify the problem by checking the traces and eventually find the command which produced the problem.

Expected Behavior

The docker-compose file is check via "docker-compose config" in
"puppetlabs-docker/lib/puppet/provider/docker_compose/ruby.rb" --> line 30:

compose_output = Puppet::Util::Yaml.safe_load(execute([command(:docker)] + args, combine: false), [Symbol])

If one executes the "docker-compose config"-command directly, one does get a correct error message.
So it would be nice, if the "compose_output" is checked for error messages and output them accordingly. This might help people in the future.

Thanks in advance and kind regrads,
Tobias

Environment

• docker-compose version 1.29.2, build 5becea4c
• Platform [Ubuntu 24.04]