FROM golang:1.23.2 AS builder

COPY . /app

WORKDIR /app

ARG VERSION="unknown"

ARG BUILD_DATE=""

ARG BUILD_AGENT="Unknown"

ARG HASH="xxxxxxxx"

ARG FLAGS="-X 'main.Version=${VERSION}' -X 'main.Hash=${HASH}' -X 'main.BuildDate=${BUILD_DATE}' -X 'main.BuildAgent=${BUILD_AGENT}'"

RUN CGO_ENABLED=0 go build -mod=vendor -ldflags="$FLAGS" ngress/cmd/ngress

FROM scratch

# next string prevents: 'x509: certificate signed by unknown authority' error, do not remove!

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

COPY --from=builder /app/ngress ./ngress

ENTRYPOINT ["./ngress"]