ci: add unified Dockerfile

tools/ci/amd64/Dockerfile

@@ -0,0 +1,76 @@
+FROM archlinux:latest
+
+## Packages ##
+RUN \
+sed -i 's/^#ParallelDownloads = .*/ParallelDownloads = 8/' /etc/pacman.conf \
+&& echo 'NoExtract = usr/share/{man,doc,info}/*' >> /etc/pacman.conf \
+&& pacman -Syyu --noconfirm --disable-download-timeout \
+afl++ \
+afl-utils \
+base-devel \
+bash \
+clang \
+clang-extra-tools \
+cmake \
+curl \
+gcc \
+git \
+libc++ \
+libinput \
+libunwind \
+libx11 \
+libxcursor \
+libxi \
+libxinerama \
+libxrandr \
+mesa \
+mold \
+ninja \
+valgrind \
+wget \
+xcb-util-cursor \
+xorg-server-xvfb \
+xorg-util-macros \
+xtrans \
+zlib \
+&& pacman -Scc --noconfirm
+
+## Sanitizers ##
+RUN \
+git clone --depth=1 https://github.com/llvm/llvm-project.git -b llvmorg-20.1.8 \
+&& mkdir llvm-project/build-lsan llvm-project/build-msan \
+\
+&& cd llvm-project/build-lsan \
+&& cmake -G Ninja \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_LINKER_TYPE="MOLD" \
+  -DCMAKE_INSTALL_PREFIX=/libcxx_lsan \
+  -DCMAKE_C_COMPILER=clang \
+  -DCMAKE_CXX_COMPILER=clang++ \
+  -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+  -DLLVM_ENABLE_PIC=ON \
+  -DLIBCXX_INSTALL_MODULES=ON \
+  -DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
+  -DLLVM_USE_SANITIZER=Leaks \
+  ../runtimes \
+&& ninja cxx cxxabi \
+&& ninja install-cxx install-cxxabi \
+\
+&& cd ../build-msan \
+&& cmake -G Ninja \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_LINKER_TYPE="MOLD" \
+  -DCMAKE_INSTALL_PREFIX=/libcxx_msan \
+  -DCMAKE_C_COMPILER=clang \
+  -DCMAKE_CXX_COMPILER=clang++ \
+  -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+  -DLLVM_ENABLE_PIC=ON \
+  -DLIBCXX_INSTALL_MODULES=ON \
+  -DLIBCXXABI_USE_LLVM_UNWINDER=OFF \
+  -DLLVM_USE_SANITIZER=MemoryWithOrigins \
+  ../runtimes \
+&& ninja cxx cxxabi \
+&& ninja install-cxx install-cxxabi \
+\
+&& cd ../.. \
+&& rm -rf llvm-project