Add NAT64, DNS64 to network

mikrotik/coredns/Dockerfile

@@ -0,0 +1,32 @@
+# Stage 1: build CoreDNS with minimal plugin set
+FROM golang:1.25-alpine AS build
+
+RUN apk add --no-cache git make bash
+
+WORKDIR /src
+RUN git clone --depth 1 --branch v1.12.1 \
+    https://github.com/coredns/coredns .
+
+# Overwrite plugin.cfg with our trimmed list before compilation
+COPY plugin.cfg .
+
+RUN go generate && make
+
+# Stage 2: extract CA certificates from a full image
+FROM debian:stable-slim AS certs
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates && rm -rf /var/lib/apt/lists/*
+
+# Stage 3: minimal runtime — scratch + binary + certs only
+FROM scratch
+
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /src/coredns /coredns
+COPY Corefile /Corefile
+
+# 53:  DNS (UDP + TCP)
+# 8080: health endpoint
+EXPOSE 53/udp 53/tcp 8080/tcp
+
+# RouterOS requires root to bind port 53 — no USER directive
+ENTRYPOINT ["/coredns", "-conf", "/Corefile"]