Containerfile.download

# This Dockerfile is used to cross-build the kubectl-oadp binaries for all platforms
# It also builds a Go server that serves the built binaries

FROM --platform=$BUILDPLATFORM golang:1.25 AS builder

ARG TARGETOS
ARG TARGETARCH

WORKDIR /app

COPY go.mod go.sum ./
RUN go mod download && go mod verify

COPY . .

# Version information
ARG VERSION=dev
ARG GIT_COMMIT=unknown

# Build release binaries for all platforms as direct executables
# with clean names for direct curl/wget download.
RUN set -e && \
    mkdir -p /archives && \
    for platform in linux/amd64 linux/arm64 darwin/amd64 darwin/arm64 windows/amd64 windows/arm64; do \
        os=$(echo $platform | cut -d'/' -f1) && \
        arch=$(echo $platform | cut -d'/' -f2) && \
        if [ "$os" = "windows" ]; then \
            output="kubectl-oadp_${os}_${arch}.exe"; \
        else \
            output="kubectl-oadp_${os}_${arch}"; \
        fi && \
        echo "Building $output..." && \
        CGO_ENABLED=0 GOOS=$os GOARCH=$arch \
            go build -trimpath \
            -ldflags="-s -w \
                -X github.com/vmware-tanzu/velero/pkg/buildinfo.Version=${VERSION} \
                -X github.com/vmware-tanzu/velero/pkg/buildinfo.GitSHA=${GIT_COMMIT} \
                -X github.com/vmware-tanzu/velero/pkg/buildinfo.GitTreeState=clean" \
            -o /archives/$output \
            . && \
        (cd /archives && sha256sum $output > $output.sha256); \
    done && \
    chmod -x /archives/kubectl-oadp_* && \
    cp LICENSE /archives/LICENSE && \
    rm -rf /root/.cache/go-build /tmp/*

# Build the download server for the TARGET platform (the arch this container will run on)
RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
    go build -trimpath -o /usr/local/bin/download-server ./cmd/downloads/ && \
    go clean -cache -modcache -testcache && \
    rm -rf /root/.cache/go-build /go/pkg

FROM registry.access.redhat.com/ubi9/ubi-minimal:latest

COPY --from=builder /archives /archives
COPY --from=builder /usr/local/bin/download-server /usr/local/bin/download-server

EXPOSE 8080

CMD ["/usr/local/bin/download-server"]