Metadata Cmd test failing but reported expected and actual values are identical

[Michal Jeco]

The Metadata Cmd test is returning failing but the actual and expected CMD values are the same.

=== RUN: Metadata Test
--- FAIL
duration: 0s
Error: Image Cmd [/bin/sh -c /usr/local/bin/python main.py] does not match expected Cmd: [/bin/sh -c /usr/local/bin/python main.py]

I'm running this with gcr.io/gcp-runtimes/container-structure-test:v1.10.0 and the following config.yaml

schemaVersion: 2.0.0
metadataTest:
  cmd: ["/bin/sh -c /usr/local/bin/python main.py"]

The error message comes from metadata.go:L135 which compares len(*mt.Cmd) to len(imageConfig.Cmd).

[Brahim Boukoufallah]

Excuse me for digging up this issue. 😅

What is the format of CMD of your Dockerfile? 🤔

Did you use the CMD in shell form? If so, the documentation states :

If you use the shell form of the CMD, then the <command> will execute in /bin/sh -c

Example:

# Dockerfile

CMD /usr/local/bin/python main.py

metadataTest:
  cmd: ["/bin/sh", "-c, "/usr/local/bin/python main.py"]

For me it was the issue 😅