FROM library/golang:1.23 as builder
RUN git clone -b v2.3.0 https://github.com/thomseddon/traefik-forward-auth /go/traefik-forward-auth
WORKDIR /go/traefik-forward-auth
RUN CGO_ENABLED=0 go build -a -installsuffix nocgo -o /traefik-forward-auth ./cmd

# Copy into scratch container
FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /traefik-forward-auth ./
ENTRYPOINT ["./traefik-forward-auth"]