FROM golang:1.25-alpine AS builder

ARG VERSION=dev

RUN apk add --no-cache git

WORKDIR /build
COPY go.mod go.sum ./
RUN go mod download

COPY . .
RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" -o mcns ./cmd/mcns

FROM alpine:3.21

RUN addgroup -S mcns && adduser -S mcns -G mcns
COPY --from=builder /build/mcns /usr/local/bin/mcns

USER mcns
EXPOSE 53/udp 53/tcp 8443 9443

ENTRYPOINT ["mcns"]
CMD ["server", "--config", "/srv/mcns/mcns.toml"]