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bucketeer/Dockerfile
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StasonJatham e8f7d6bfdf ctcloud: CertSpotter-backed CT cloud-resource monitor
Single stateless Go process that consumes CT logs via embedded (patched)
CertSpotter internals, classifies cloud/database/storage DNS identifiers
in-process with a zero-allocation classifier, enriches via round-robin DNS
resolvers with CNAME following, and batch-writes useful findings to PostgreSQL.

- third_party/certspotter: 2-hunk IdentifierSink patch, no stdout/JSON/files
- internal/classify: AWS/Azure/GCP/Firebase/Cloudflare R2/DigitalOcean/Supabase/OCI
- internal/dns: sharded bounded TTL cache, multi-resolver load balancing + failover
- internal/pipeline: bounded queues, dedup, direct-priority load shedding
- internal/store: pgx batch writer, Postgres CT checkpoints (no cert contents)
- internal/probe: optional non-destructive reachability checks (off by default)
- Docker: distroless non-root, read-only rootfs, no app volume, resource limits
- tests enforce 0 allocs/op on the classifier and sink hot path
2026-09-22 13:13:10 +02:00

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624 B
Docker

# syntax=docker/dockerfile:1
FROM golang:1.25-alpine AS build
WORKDIR /src
# Cache module downloads (including the local certspotter fork's deps).
COPY go.mod go.sum ./
COPY third_party/certspotter/go.mod third_party/certspotter/go.sum ./third_party/certspotter/
RUN go mod download
COPY . .
# Static binary: no cgo, no shell, no writable filesystem required.
RUN CGO_ENABLED=0 GOOS=linux go build \
-trimpath -ldflags="-s -w" \
-o /out/ctcloud ./cmd/ctcloud
FROM gcr.io/distroless/static-debian12:nonroot
COPY --from=build /out/ctcloud /ctcloud
USER nonroot:nonroot
EXPOSE 9090
ENTRYPOINT ["/ctcloud"]