Optimize API and dashboard Docker images — remove workspace bloat

[rustydb]

Priority: P1

Source

Senior Architect Code Review (2026-04-03)

Problem

The API and dashboard production Dockerfiles use COPY --from=build /app /app which copies the entire workspace into the runner stage — including node_modules, all source files, build artifacts, and test files. This results in unnecessarily large production images (potentially hundreds of MB of dead weight).

Affected Files

• apps/api/Dockerfile
• apps/dashboard/Dockerfile

Current Pattern

# API Dockerfile - runner stage
FROM    docker.io/oven/bun:1.3.11 AS runner
WORKDIR /app
COPY    --from=build /app /app    # <-- copies EVERYTHING

Recommendation

API: Copy only the runtime files needed:

• apps/api/src/ (Bun runs TypeScript directly)
• packages/shared-types/src/
• node_modules/ (or better, use bun install --production)
• package.json files

Dashboard: The dashboard builds to static assets. The runner should:

• Copy only apps/dashboard/dist/ and apps/dashboard/server.ts
• Install only production dependencies
• Serve the static build via the Express server

Acceptance Criteria

• API runner image contains only runtime-necessary files
• Dashboard runner image contains only the built static assets and server
• Production images use --production dependency installation where possible
• Image sizes are reduced by at least 50%
• Both services still start and function correctly