feat(compose): validate hostRequirements in Docker Compose path

[skevetter]

Summary

• Adds ValidateHostRequirements() call to the Docker Compose container creation path (pkg/devcontainer/compose.go), matching the existing behavior in the single-container path (single.go:225-229).
• Warnings are advisory only and never block container creation — they propagate through setupContainerParams.hostWarnings into the JSON result envelope.
• Adds E2E test (up-docker-compose-host-requirements label) that verifies CPU warnings appear in the JSON envelope when using Docker Compose with hostRequirements.cpus set above host capacity.

Reference: https://containers.dev/implementors/reference/ (hostRequirements section)

Summary by CodeRabbit

• New Features

  • Docker Compose setup now validates host requirements and surfaces warnings (including CPU requirements) during container initialization to inform users of system prerequisites.

• Tests

  • Added end-to-end test validating host requirements warnings are properly displayed in Docker Compose workflows.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 40e4bed8-ad4a-4af5-92d3-10fd4e3a9d25

📥 Commits

Reviewing files that changed from the base of the PR and between c9bca5d and 560fd4c.

📒 Files selected for processing (4)

• e2e/tests/up-docker-compose/host_requirements.go
• e2e/tests/up-docker-compose/testdata/compose-host-requirements/.devcontainer.json
• e2e/tests/up-docker-compose/testdata/compose-host-requirements/docker-compose.yaml
• pkg/devcontainer/compose.go

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📝 Walkthrough

Walkthrough

Integrates host requirement warnings validation into the Docker Compose setup flow. When running the up docker-compose command, host requirements from the dev container configuration are now validated, and any warnings are captured and passed to container setup before initialization. A new e2e test verifies this integration.

Changes

Host Requirements Warning Integration for Docker Compose

Layer / File(s)	Summary
Test Configuration & Data e2e/tests/up-docker-compose/testdata/compose-host-requirements/.devcontainer.json, e2e/tests/up-docker-compose/testdata/compose-host-requirements/docker-compose.yaml	New test workspace with a devcontainer specifying hostRequirements with cpus: 128 and a corresponding Docker Compose service running a Go image.
Core Implementation pkg/devcontainer/compose.go	In runDockerCompose, host requirements validation is performed via config.ValidateHostRequirements before container setup, and the computed hostWarnings are passed to setupContainer through setupContainerParams.
E2E Test e2e/tests/up-docker-compose/host_requirements.go	Build-tagged test (linux/darwin/unix) that exercises the docker-compose flow with host requirements, captures the JSON envelope output, and asserts the presence of a cpus warning with a successful outcome.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• devsy-org/devsy#173: Introduces the ValidateHostRequirements function that this PR integrates into the docker-compose setup flow.

Suggested labels

size/l

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding host requirements validation to the Docker Compose path, matching existing behavior in the single-container path.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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