diskimage-builder/diskimage_builder/elements/gentoo/pre-finalise.d/01-gentoo-cache

#!/bin/bash

if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

GENTOO_PORTAGE_DISTFILES_DIR="${DIB_IMAGE_CACHE}/gentoo/distfiles"
GENTOO_PORTAGE_PACKAGE_DIR="${DIB_IMAGE_CACHE}/gentoo/packages/${GENTOO_PROFILE}"
GENTOO_PORTAGE_DIR="${DIB_IMAGE_CACHE}/gentoo/portage"

mkdir -p "${TMP_MOUNT_PATH}${PORTDIR}"
sudo mount --bind "${GENTOO_PORTAGE_DIR}" "${TMP_MOUNT_PATH}${PORTDIR}"
mkdir -p "${TMP_MOUNT_PATH}${DISTDIR}"
sudo mount --bind "${GENTOO_PORTAGE_DISTFILES_DIR}" "${TMP_MOUNT_PATH}${DISTDIR}"
mkdir -p "${TMP_MOUNT_PATH}${PKGDIR}"
sudo mount --bind "${GENTOO_PORTAGE_PACKAGE_DIR}" "${TMP_MOUNT_PATH}${PKGDIR}"