Add a build wrapper and a dir for custom USE flags

build-packages.sh

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+#!/bin/bash
+# SPDX-License-Identifier: MIT
+# Author: Nils Freydank <nils.freydank@posteo.de>
+PATH="/usr/bin:/bin:/usr/sbin:/sbin"
+set -uxa
+
+mapfile -t EMERGE_CALL_PARAMETERS <<<"${@}"
+
+REGISTRY="git.holgersson.xyz/gentoo-related/gentoo-binpkg-builder"
+VERSION="latest"
+IMAGE_TAG="${REGISTRY}:${VERSION}"
+
+REPOS="${REPOS:-/var/db/repos}"
+DISTFILES="${DISTFILES:-/var/cache/distfiles-podman-1}"
+BINPKG="${BINPKG:-/var/cache/packages-podman-1}"
+LOGDIR="${LOGDIR:-$(pwd)/logs}"
+PACKAGE_USE="${PACKAGE_USE:-$(pwd)/package.use}"
+
+podman_build_args=(
+    # Remove the container after usage.
+    --rm
+    # Allow interactive questsions by portage
+    -ti
+    # Limit the memory to be used.
+    --memory=20G
+    --memory-swap=1G
+    --shm-size=2G
+    # Share the portage configuration.
+    -v "${PACKAGE_USE}:/etc/portage/package.use:ro"
+    # Share the gentoo repo, overlays etc.
+    -v "${REPOS}:/var/db/repos:ro"
+    # Share the distfiles, i.e. typically source archives.
+    -v "${DISTFILES}:/var/cache/distfiles:rw,U"
+    # Share the binpkgs r/w cache.
+    -v "${BINPKG}:/var/cache/packages:rw,U"
+    # Keep the logs out of the container.
+    -v "${LOGDIR}:/var/log:rw,U"
+)
+
+mkdir -p "${REPOS}"
+mkdir -p "${DISTFILES}"
+mkdir -p "${BINPKG}"
+mkdir -p "${LOGDIR}"
+
+podman run "${podman_build_args[@]}" "${REGISTRY}:${VERSION}" \
+    emerge --oneshot --keep-going ${EMERGE_CALL_PARAMETERS[@]}
+
+# vim:fileencoding=utf-8:ts=4:syntax=bash:expandtab

package.use/acct-user:git-dep:gitea

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+acct-user/git gitea

package.use/app-admin:sudo

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+app-admin/sudo -ssl

package.use/net-misc:openssh

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+net-misc/openssh -scp security-key

package.use/sys-devel:gcc

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+sys-devel/gcc -jit -nls default-stack-clash-protection default-znow lto zstd

package.use/www-apps:gitea

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+www-apps/gitea -filecaps