FROM --platform=$BUILDPLATFORM golang:1.25.3@sha256:6d4e5e74f47db00f7f24da5f53c1b4198ae46862a47395e30477365458347bf2 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"]