Pass explicit source roots to subdirectory deploy commands

A deployment CLI invoked from a subdirectory may still upload the linked repository root. When a service uses a specialized build context, pass the source directory explicitly and enable the CLI’s path-as-root behavior; then verify build logs name the intended build file before trusting runtime failures. Changing the shell working directory alone is not evidence that the uploaded context changed.

Applies when: A monorepo deploys multiple services with different build roots through one linked project. Keywords: monorepo deploy source root subdirectory wrong dockerfile build context