compose-spec/spec.md at master · compose-spec/compose-spec
no_toc} This document specifies the Compose file format used to define multi-containers applications. Distribution of this document is unlimited. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.
https://github.com/compose-spec/compose-spec/blob/master/spec.md