FROM golang:1.25-alpine AS builder
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -o /dcu-send ./cmd/dcu-send

FROM alpine:3.20
RUN apk add --no-cache ca-certificates tzdata
COPY --from=builder /dcu-send /usr/local/bin/dcu-send
ENTRYPOINT ["dcu-send"]