config BR2_TARGET_ROOTFS_OCI bool "oci image" help Build an OCI (Open Container Initiative) image. By default, the image is generated in a directory called rootfs-oci: $ cd output/images $ ls rootfs-oci/ blobs index.json oci-layout You can push the image to a registry. Example using skopeo: $ skopeo copy --dest-creds : \ oci:rootfs-oci: docker:///[:tag] And pull/run it with docker: $ docker run -it /[:tag] if BR2_TARGET_ROOTFS_OCI config BR2_TARGET_ROOTFS_OCI_AUTHOR string "author name and/or email address" default "Buildroot" help Name and/or email address of the person which created the image. config BR2_TARGET_ROOTFS_OCI_TAG string "image tag" default "latest" help Tag to be used in the container image. If empty, 'latest' will be used by default. config BR2_TARGET_ROOTFS_OCI_ENTRYPOINT string "entrypoint" default "sh" help Command to execute when the container starts. config BR2_TARGET_ROOTFS_OCI_ENTRYPOINT_ARGS string "entrypoint arguments" help Default arguments to the entrypoint of the container. config BR2_TARGET_ROOTFS_OCI_WORKDIR string "working directory" help Working directory of the entrypoint process in the container. config BR2_TARGET_ROOTFS_OCI_UID string "username or UID" default "0" help The username or UID of user the process run as. config BR2_TARGET_ROOTFS_OCI_ENV_VARS string "environment variables" help Default environment variables for the container. Space-separated list of variable=value assignments. config BR2_TARGET_ROOTFS_OCI_PORTS string "ports" help Default set of ports to expose from a container running this image as a space-separted list of ports in the following format: /tcp, /udp, (same as /tcp). config BR2_TARGET_ROOTFS_OCI_LABELS string "labels" help Metadata in the format KEY=VALUE for the container compliant with OCI annotation rules. If KEY starts with a dot, it will be prefixed with "org.opencontainers.image" (e.g. .url -> org.opencontainers.image.url). config BR2_TARGET_ROOTFS_OCI_ARCHIVE bool "pack oci image into a tar archive" help Select whether the image should be packed into a TAR archive. endif