FROM golang:1.23-alpine AS build
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o /out/db-keepalive .

FROM gcr.io/distroless/static-debian12:nonroot
COPY --from=build /out/db-keepalive /db-keepalive
USER nonroot:nonroot
ENTRYPOINT ["/db-keepalive"]
