Add a Dockerfile and PKGBUILD for Arch Linux

linux/packages/arch/Dockerfile

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+FROM archlinux:base-devel
+
+LABEL maintainer="d.vedenko@audacityteam.org"
+LABEL description="A build environment to check the builds for Arch package maintainers"
+LABEL version="3.0"
+
+RUN pacman -Syu --noconfirm
+
+COPY ["dependencies.sh", "/dependencies.sh"]
+RUN ./dependencies.sh
+
+COPY ["entrypoint.sh", "/entrypoint.sh"]
+
+RUN useradd -m user
+#RUN echo "user ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/user
+USER user
+WORKDIR /home/user
+
+COPY ["PKGBUILD", "/home/user/PKGBUILD"]
+
+ENTRYPOINT ["bash", "-ex", "/entrypoint.sh"]

linux/packages/arch/PKGBUILD

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+pkgname=audacity-test
+pkgver=3.0.3
+pkgrel=1
+pkgdesc="Audacity is an easy-to-use, multi-track audio editor and recorder"
+groups=(audio)
+url="https://audacityteam.org"
+license=(GPL)
+
+arch=(x86_64)
+
+depends=(zlib
+   alsa-lib
+   gtk2
+   expat
+   libid3tag 
+   libogg
+   libvorbis
+   flac
+   lame
+   twolame
+   libmad
+   libsndfile 
+   jack
+   lilv 
+   lv2 
+   portsmf
+   portmidi
+   suil
+   vamp-plugin-sdk
+   libsoxr
+   soundtouch
+   libpng
+   libjpeg-turbo
+   libsm
+)
+
+makedepends=(
+   git 
+   cmake 
+   python-pip
+   ffmpeg
+)
+
+optdepends=('ffmpeg: additional import/export capabilities')
+
+provides=(audacity audacity-test)
+conflicts=(audacity audacity-test)
+
+source=(
+  "audacity-sources.tar.gz"
+  "audacity-offline-dependencies-arch-linux.tar.gz"
+)
+
+md5sums=(
+  'SKIP'
+  'SKIP'
+)
+
+build() {
+    depsDir=$(readlink -f ./audacity-offline-dependencies)
+    python3 -m venv conan_env
+
+    source conan_env/bin/activate
+    pip3 install --no-index --find-links "$depsDir/pip_cache" conan 
+
+    export CONAN_USER_HOME="$depsDir/conan_home"
+    mkdir -p $CONAN_USER_HOME
+
+    conan config home
+    conan config init
+    conan config set storage.download_cache="$CONAN_USER_HOME/download_cache"
+
+    cmake_args=(
+        -D CMAKE_BUILD_TYPE=Release
+        -D CMAKE_INSTALL_PREFIX=/usr
+
+        -D audacity_conan_allow_prebuilt_binaries=no
+
+        -D audacity_lib_preference=system # Change the libs default to 'system'
+        -D audacity_obey_system_dependencies=On # And force it!
+
+        -D audacity_use_pch=no
+
+        -D audacity_use_wxwidgets=local # wxWidgets 3.1 is not available
+        -D audacity_use_portaudio=local # System portaudio is not yet usable
+
+        -D audacity_use_sbsms=local # sbsms is only available in AUR
+    )
+
+    cmake -S audacity -B build "${cmake_args[@]}"
+    cmake --build build -- -j`nproc`
+}
+
+package() {
+  cd build
+  make DESTDIR="$pkgdir/" install
+}

linux/packages/arch/dependencies.sh

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+#!/usr/bin/env bash
+
+build_deps=(
+   gcc
+   git 
+   cmake 
+   python-pip
+)
+
+deps=(
+   zlib
+   alsa-lib
+   gtk2
+   expat
+   libid3tag 
+   libogg
+   libvorbis
+   flac
+   lame
+   twolame
+   libmad
+   libsndfile 
+   jack
+   lilv 
+   lv2 
+   portsmf
+   portmidi
+   suil
+   vamp-plugin-sdk
+   libsoxr
+   soundtouch
+   # sbsms is not available on arch
+   # sbsms
+   libpng
+   libjpeg-turbo
+   libsm
+   ffmpeg
+)
+
+pacman -S --noconfirm \
+   "${build_deps[@]}" \
+   "${deps[@]}" 

linux/packages/arch/entrypoint.sh

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+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+cmake_args=(
+    -D CMAKE_BUILD_TYPE=Release
+
+    -D audacity_conan_allow_prebuilt_binaries=no
+
+    -D audacity_lib_preference=system # Change the libs default to 'system'
+    -D audacity_obey_system_dependencies=On # And force it!
+
+    -D audacity_use_pch=no
+
+    -D audacity_use_wxwidgets=local # wxWidgets 3.1 is not available
+    -D audacity_use_portaudio=local # System portaudio is not yet usable
+
+    -D audacity_use_sbsms=local # sbsms is only available in AUR
+)
+
+if [[ $1 == "prepare" ]]; then
+    tar -xzf /work_dir/audacity-sources.tar.gz
+    
+    audacity/linux/packages/prepare_offline_dependencies.sh "${cmake_args[@]}"
+
+    cp audacity-offline-dependencies.tar.gz /work_dir/audacity-offline-dependencies-arch-linux.tar.gz
+elif [[ $1 == "build" ]]; then
+    tar -xzf /work_dir/audacity-sources.tar.gz
+    tar -xzf /work_dir/audacity-offline-dependencies-arch-linux.tar.gz
+
+    audacity/linux/packages/build_package.sh "${cmake_args[@]}"
+
+    cp audacity-linux_x86_64.tar.gz /work_dir/audacity-arch-linux_x86_64.tar.gz
+elif [[ $1 == "package" ]]; then
+    cp /work_dir/*.tar.gz ./
+    makepkg
+    cp *.zst /work_dir
+fi