Add scripts to build alpine packages with podman

.dockerignore

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+*

.gitignore

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+packages/*
+!packages/.gitkeep
+target/*
+!target/.gitkeep

Dockerfile

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+FROM alpine:3.21
+
+# Install build dependencies
+# TODO: trim dependencies?
+RUN apk update && apk add \
+  build-base abuild \
+	rustup \
+  build-base \
+  musl-dev \
+  gcc \
+  cmake \
+  make \
+  pkgconfig \
+  perl \
+  python3 \
+  curl \
+  git \
+  llvm \
+  clang \
+  clang-libclang \
+  protobuf-dev \
+  libc-dev \
+  linux-headers \
+  freetype-dev \
+  freetype-static \
+  fontconfig-dev \
+  fontconfig-static \
+  bzip2-dev \
+  bzip2-static \
+  brotli-dev \
+  brotli-static \
+  expat-dev \
+  expat-static \
+  libx11-dev \
+  libxcursor-dev \
+  libxkbcommon-dev \
+  libxkbcommon-static \
+  wayland-dev \
+  wayland-libs-client \
+  wayland-libs-server \
+  wayland-static \
+  openssl-dev \
+  openssl-libs-static \
+  zlib-dev \
+  zlib-static \
+  libpng-dev \
+  libpng-static \
+  libwebp-dev \
+  libwebp-static \
+  tiff-dev \
+  libjpeg-turbo-dev \
+  libjpeg-turbo-static
+  
+RUN rustup-init -y --default-toolchain stable
+
+# Set pkg-config to use static libraries
+ENV PKG_CONFIG_ALLOW_STATIC=1
+ENV PKG_CONFIG_ALL_STATIC=1
+
+# Slint/winit does not work when statically compiled
+ENV RUSTFLAGS="-C target-feature=-crt-static"
+
+WORKDIR /build
+

README.md

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+# Alpine packages for mullvad-vpn
+
+## Setup
+
+1. Install `abuild`
+2. Create keys: `abuild-keygen`
+   The keys will end up in ~/.abuild/, and will be mounted into the build container.
+3. Remember to keep keys around.
+
+## Building
+
+```
+./podman-build.sh ./mullvad-vpn-slint
+```
+
+## Updating
+
+1. Update submodule
+2. Either update `pkgver`. If so, set `pkgrel` to 0,
+   or bump `pkgrel` by 1.
+3. `git commit -m "update packages"`

abuild.conf

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+PACKAGER_PRIVKEY="/key.rsa"

podman-build.sh

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+#!/bin/sh
+
+set -ex
+cd "$(dirname "$0")"
+
+package="$1"
+builder_image="mullvad-slint-musl-builder"
+. "$HOME/.abuild/abuild.conf"
+
+podman build . -f Dockerfile -t "$builder_image"
+podman run --rm \
+    -v "./$package":/build \
+    -v ./abuild.conf:/root/.abuild/abuild.conf:ro \
+    -v "$PACKAGER_PRIVKEY":/key.rsa:ro \
+    -v "$PACKAGER_PRIVKEY.pub":/key.rsa.pub:ro \
+    -v "$PACKAGER_PRIVKEY.pub":/etc/apk/keys/key.rsa.pub:ro \
+    -v ./target:/cargo-target \
+    -v ./packages:/root/packages \
+    -e "CARGO_TARGET_DIR=/cargo-target" \
+    -it \
+    "$builder_image" \
+    abuild -F
+