CV-M006: Undefined config reference
Error Semantic
Why This Matters
A service references a config that is not defined in the top-level configs section. Docker Compose requires all configs used by services to be declared at the top level with either a file path, content, or an external flag. Without a matching top-level declaration, Compose will fail at startup with a "config not found" error.
How to Fix
Define the referenced config in the top-level configs section.
Before (incorrect)
services:
web:
configs:
- nginx_conf
# No top-level configs definedAfter (correct)
services:
web:
configs:
- nginx_conf
configs:
nginx_conf:
file: ./nginx.confRule Details
- Rule Code
- CV-M006
- Severity
- Error
- Category
- Semantic