Docker build filter removing sourcemaps and types from runtime
Built for teams deploying Node apps to resource-constrained servers.
“Production Docker image ships ~40% non-runtime files (sourcemaps/.d.ts) — slows down pulls on constrained hosts [GOT CREATED]…”
The receipts — real demand
“Production Docker image ships ~40% non-runtime files (sourcemaps/.d.ts) — slows down pulls on constrained hosts [GOT CREATED]”
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Why this is a gap
Surfaced from a high-intensity complaint with clear willingness to pay and a specific, reachable audience.
The market
Teams deploying Node.js apps to resource-constrained servers (edge, IoT, tight bandwidth). No search volume given, but the pain (40% bloat in production images) is a known DevOps optimization pain point.
Competition & the opening
Docker multi-stage builds, .dockerignore, node-prune, manual rm commands, and webpack/esbuild production flags all solve this. Distroless and slim base images enforce minimal artifacts by design. Market is extremely crowded (8/10)—the solution already exists in multiple free, well-documented forms that teams actively use.
What's hard to build
This is a solved problem with no technical moat. Every approach—native Docker features, open-source CLI tools, build-time flags—is free, documented, and requires no new infrastructure. Building a product here competes directly against free, integrated solutions.
Why now
Docker multi-stage builds and .dockerignore are mature, free, and widely known; this idea duplicates their functionality and loses to native tooling.
How you'd monetize
Not viable — native Docker features + build-time flags make this obsolete; do no