stacker deploy --target server --dry-run attempts a real docker pull instead of simulating

[vsilent]

Summary

stacker deploy --target server --dry-run is supposed to "show what would be deployed without executing" (per --help), but for the server target it actually attempts to pull a Docker image locally, and fails hard if that image isn't available — this isn't a simulation, it's a real side-effecting action.

Steps to reproduce

1. Register a server target: stacker config setup server --ip <IP> --user root --key <path> (saves into stacker.yml's deploy.server).
2. stacker deploy --target server --dry-run

Observed

Error: Deployment to server failed: Server deployment failed: Unable to find image 'trydirect/install-service:latest' locally
docker: Error response from daemon: failed to resolve reference "docker.io/trydirect/install-service:latest": docker.io/trydirect/install-service:latest: not found

Note trydirect/install-service:latest doesn't currently resolve on Docker Hub at all (docker pull trydirect/install-service:latest → same "not found" error, confirmed independently of this repro).

Expected

--dry-run should not attempt to pull images, contact Docker, or perform any real deployment action — just print the plan (compose file, target, config bundle contents, etc.), consistent with how --dry-run behaves for --target local/--target cloud (both of which just print a plan without side effects in my testing).

Actual

--dry-run for --target server runs a real local orchestration step (apparently pulling/running a trydirect/install-service container to drive the SSH-based deploy) and surfaces a real failure from it.

Interesting side note

Immediately after this failed --dry-run, running the same command without --dry-run succeeded cleanly and didn't hit this image-pull step at all — so whatever --dry-run does differently for the server target isn't just "the same deploy path minus a final apply step", it's a genuinely different (and broken) code path.

Environment

• stacker CLI 0.3.1 (144d1a6)
• Reproduced via stacker-projects/caddy in trydirect/stacker-project-examples