src/cmd/oem_preloader/Dockerfile

FROM golang:1.26.2 AS oem-preloader-go-builder
COPY . /work/
WORKDIR /work/src/cmd/oem_preloader
RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o oem-preloader main.go
WORKDIR /work/src/cmd/cos_kernel_args
RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -buildvcs=false -o cos_kernel_args .

FROM marketplace.gcr.io/google/ubuntu2404:latest
LABEL maintainer="cos-containers@google.com"

COPY --from=oem-preloader-go-builder /work/src/cmd/oem_preloader/oem-preloader /oem-preloader
COPY --from=oem-preloader-go-builder /work/src/cmd/cos_kernel_args/cos_kernel_args /usr/bin/cos_kernel_args

# Install minimal tools needed.
RUN apt-get update && \
    apt-get install -y --no-install-recommends sudo util-linux fdisk cryptsetup e2fsprogs mtools sed gzip xz-utils bzip2

ENTRYPOINT ["/oem-preloader"]