FROM golang:1.26-alpine AS builder
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY main.go ./
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags='-s -w' -o /exporter .

FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /exporter /exporter
EXPOSE 9100
ENTRYPOINT ["/exporter"]