ARG GO_IMAGE=public.ecr.aws/docker/library/golang:1.25-alpine
FROM ${GO_IMAGE} AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o nanometrics-server .

FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /app/nanometrics-server /nanometrics-server
VOLUME /data
EXPOSE 8080 9999/udp
CMD ["/nanometrics-server"]