docker stuff

Signed-off-by: fbt <fbt@fleshless.org>

Dockerfile

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+FROM spark.builder
+COPY ./build /build

build

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+#!/usr/bin/env bash
+# The builder user is already created in the rootfs
+
+export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
+export LC_ALL=en_US.UTF-8
+export PKG_URL=$1
+
+# Upgrade
+pacman -Suy --noconfirm
+
+# Workdir
+chown builder:builder /buildroot
+cd /buildroot
+
+# Build the damn thing
+sudo -u builder git clone "$PKG_URL" .
+sudo -u builder makepkg -s --noconfirm -L

makepkg-docker

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+#!/usr/bin/env bash
+shopt -s nullglob
+
+did="pkg-build-$$.$SRANDOM"
+
+pkg_dest=$1
+pkg_url=$2
+
+cd /home/docker/dockerfiles/builder
+docker build -t "$did" --build-arg --force-rm .
+docker run --rm -v "/tmp/$did:/buildroot" "$did:latest" /build "$pkg_url"
+
+artifacts=( "/tmp/$did/"*.pkg.* )
+for i in "${artifacts[@]}"; do
+	i_name="${i##*/}"
+
+	printf 'Found artifact: %s\n' "$i_name"
+		
+	if [[ -f "$pkg_dest/$i_name" ]]; then
+		printf '%s/%s already exists, not overwriting.\n' "$pkg_dest" "$i_name"
+	else
+		printf 'Copying %s to %s.\n' "$i_name" "$pkg_dest"
+		cp -vn "$i" "$pkg_dest"
+	fi
+done
+
+# cleanup
+docker rmi "$did"
+rm -rf "/tmp/$did"