FROM --platform=$BUILDPLATFORM golang:1.25.6@sha256:06d1251c59a75761ce4ebc8b299030576233d7437c886a68b43464bad62d4bb1 AS builder

WORKDIR /builder

# Copy the Go Modules manifests
COPY go.mod go.mod
COPY go.sum go.sum
RUN go mod download

# Copy the go source
COPY main.go .
COPY pkg pkg

ARG TARGETOS
ARG TARGETARCH
RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build

FROM gcr.io/distroless/base-debian12
COPY --from=builder /builder/kubelogin /
ENTRYPOINT ["/kubelogin"]