feat: add arch imag

.woodpecker/arch-docker.yml

@@ -0,0 +1,23 @@
+platform: 'linux/amd64'
+
+when:
+  - path: 
+      - 'arch/Dockerfile'
+      - '.woodpecker/arch-docker.yml'
+    event: [push]
+  - event: [cron]
+
+pipeline:
+  build:
+    image: 'woodpeckerci/plugin-docker-buildx'
+    secrets: 
+      - 'docker_username'
+      - 'docker_password'
+    settings:
+      registry: 'git.rustybever.be'
+      repo: 'git.rustybever.be/vieter-v/vieter-builder'
+      tags:
+        - 'latest'
+      platforms: [ 'linux/arm64/v8', 'linux/amd64' ]
+      mtu: 1300
+      context: 'arch'

README.md

@@ -35,3 +35,11 @@ docker buildx build \
 This build requires a working buildx environment.
 
 The hash in the tag corresponds to the tag of the vlang repository.
+
+## Arch
+
+The Arch builder image is a soft fork of
+[Menci/docker-archlinuxarm](https://github.com/Menci/docker-archlinuxarm), with
+the following minimal changes:
+
+* Enable LTO by default

arch/Dockerfile

@@ -0,0 +1,42 @@
+FROM alpine:3.15 AS bootstrapper
+ARG TARGETARCH
+COPY files /files
+RUN \
+	apk add arch-install-scripts pacman-makepkg curl && \
+	cat /files/repos-$TARGETARCH >> /etc/pacman.conf && \
+	mkdir -p /etc/pacman.d && \
+	cp /files/mirrorlist-$TARGETARCH /etc/pacman.d/mirrorlist && \
+    BOOTSTRAP_EXTRA_PACKAGES="" && \
+	if [[ "$TARGETARCH" == "amd64" ]]; then \
+			apk add zstd && \
+			mkdir /tmp/archlinux-keyring && \
+			curl -L https://archlinux.org/packages/core/any/archlinux-keyring/download | unzstd | tar -C /tmp/archlinux-keyring -xv && \
+			mv /tmp/archlinux-keyring/usr/share/pacman/keyrings /usr/share/pacman/; \
+	elif [[ "$TARGETARCH" == "arm64" ]]; then \
+			curl -L https://github.com/archlinuxarm/archlinuxarm-keyring/archive/refs/heads/master.zip | unzip -d /tmp/archlinuxarm-keyring - && \
+			mkdir /usr/share/pacman/keyrings && \
+			mv /tmp/archlinuxarm-keyring/*/archlinuxarm* /usr/share/pacman/keyrings/ && \
+            BOOTSTRAP_EXTRA_PACKAGES="archlinuxarm-keyring"; \
+	fi && \
+	pacman-key --init && \
+	pacman-key --populate && \
+	mkdir /rootfs && \
+	/files/pacstrap-docker /rootfs base-devel $BOOTSTRAP_EXTRA_PACKAGES && \
+	cp /etc/pacman.d/mirrorlist /rootfs/etc/pacman.d/mirrorlist && \
+	echo "en_US.UTF-8 UTF-8" > /rootfs/etc/locale.gen && \
+	echo "LANG=en_US.UTF-8" > /rootfs/etc/locale.conf && \
+	chroot /rootfs locale-gen && \
+	rm -rf /rootfs/var/lib/pacman/sync/* /rootfs/files
+
+FROM scratch
+COPY --from=bootstrapper /rootfs/ /
+ENV LANG=en_US.UTF-8
+RUN \
+	ln -sf /usr/lib/os-release /etc/os-release && \
+	pacman-key --init && \
+	pacman-key --populate && \
+	rm -rf /etc/pacman.d/gnupg/{openpgp-revocs.d/,private-keys-v1.d/,pubring.gpg~,gnupg.S.}* && \
+    # Enable LTO by default \
+    sed -i 's/!lto/lto/' /etc/makepkg.conf
+
+CMD ["/usr/bin/bash"]

arch/files/mirrorlist-amd64

@@ -0,0 +1 @@
+Server = http://mirrors.xtom.com/archlinux/$repo/os/$arch

arch/files/mirrorlist-arm64

@@ -0,0 +1 @@
+Server = http://mirror.archlinuxarm.org/$arch/$repo

arch/files/pacstrap-docker

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+out() { printf "$1 $2\n" "${@:3}"; }
+error() { out "==> ERROR:" "$@"; } >&2
+die() { error "$@"; exit 1; }
+
+(( $# )) || die "No root directory specified"
+newroot=$1; shift
+pacman_args=("${@:-base}")
+
+if [[ $EUID -ne 0 ]]; then
+	die "This script must be run as root"
+fi
+
+[[ -d $newroot ]] || die "%s is not a directory" "$newroot"
+
+echo 'Creating install root at %s' "$newroot"
+mkdir -m 0755 -p "$newroot"/var/{cache/pacman/pkg,lib/pacman,log} "$newroot"/{dev,run,etc}
+mkdir -m 1777 -p "$newroot"/tmp
+mkdir -m 0555 -p "$newroot"/{sys,proc}
+
+echo 'Creating /dev/null in new root'
+mknod "$newroot/dev/null" c 1 3
+
+echo 'Installing packages to %s' "$newroot"
+if ! pacman -r "$newroot" -Sy --noconfirm "${pacman_args[@]}"; then
+	die 'Failed to install packages to new root'
+fi
+
+echo 'Deleting /dev/null from new root'
+rm "$newroot/dev/null"

arch/files/repos-amd64

@@ -0,0 +1,8 @@
+[core]
+Include = /etc/pacman.d/mirrorlist
+
+[extra]
+Include = /etc/pacman.d/mirrorlist
+
+[community]
+Include = /etc/pacman.d/mirrorlist

arch/files/repos-arm64

@@ -0,0 +1,14 @@
+[core]
+Include = /etc/pacman.d/mirrorlist
+
+[extra]
+Include = /etc/pacman.d/mirrorlist
+
+[community]
+Include = /etc/pacman.d/mirrorlist
+
+[alarm]
+Include = /etc/pacman.d/mirrorlist
+
+[aur]
+Include = /etc/pacman.d/mirrorlist