[j0sh]

The release Docker build excludes the new discovery package from its allowlisted context, so both Linux builds fail with missing discovery and discovery/shared imports. Include discovery/ in .dockerignore so the existing release builds and smoke tests can compile and exercise all five binaries.

Validation passed:

• Linux amd64 and arm64 release builds, including static-link checks, archive smoke tests, and image smoke tests.
• Go checks, including race and SDK integration tests, vet, staticcheck, and vulnerability scanning.
• Local Linux arm64 build using only the allowlisted Docker context; git diff --check.

Fixes the build failure in https://github.com/livepeer/node/actions/runs/39925104071.

[Copilot]

🟢 Approval recommended

The one-line addition follows the existing allowlist pattern and addresses the missing package without unrelated changes.

No open issues 🎉

What changed in this PR

This PR fixes the release Docker build context by including the discovery package needed to compile the project’s binaries.

Changes:

• Adds !discovery/ to the existing Docker context allowlist, including its shared subpackage.

File	Description
.dockerignore	Includes discovery/ in the Docker build context.

_{Review effort: Balanced}