[skevetter]

Summary

workspace up had no way to ignore a project's devcontainer config. --devcontainer-image only overrides the image field of an already-resolved config — it still runs discovery (so multiple .devcontainer/<id>/ profiles error out) and still applies the profile's features, lifecycle hooks, and mounts. That combination breaks in practice: e.g. a repo profile pulling docker-outside-of-docker fails to build on a swapped-in base image whose distro the feature doesn't support.

This adds a --devcontainer source selector so a user can bypass the project's devcontainer entirely.

Usage

# clean box on your image — ignores the repo's devcontainer
devsy workspace up --devcontainer none --devcontainer-image python <src>

# one-liner: config is just this image
devsy workspace up --devcontainer image:python <src>

When a source spec is set, resolution skips project discovery (no more "multiple devcontainer configurations found" error) and synthesizes an image-only config — no features, hooks, or mounts from the project.

Notes

• The synthesized config is written to a devsy-namespaced filename (.devcontainer.devsy.json) so it never overwrites a user's own root .devcontainer.json (a spec-valid config location). Covered by a regression test.
• --devcontainer-image is unchanged and still composes as the image modifier on top of any source.
• This is phase 1 of a source / overlay / modifier axis model. Follow-ups: id: and <path> specs, and folding --devcontainer-path / --devcontainer-id / --fallback-image into --devcontainer as hidden aliases.

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📥 Commits

Reviewing files that changed from the base of the PR and between 8feba9f and 78a6155.

📒 Files selected for processing (7)

• cmd/workspace/up/up.go
• cmd/workspace/up/up_flags.go
• pkg/devcontainer/config.go
• pkg/devcontainer/config_test.go
• pkg/devcontainer/source.go
• pkg/devcontainer/source_test.go
• pkg/provider/workspace.go

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