From 1f029fd69bcd47f4b2c6ccdb0914399a292d5fea Mon Sep 17 00:00:00 2001
From: Robear Selwans <robear.selwans@outlook.com>
Date: Wed, 6 May 2026 01:52:35 +0300
Subject: [PATCH] Replaced apt packages with LunarG's Vulkan SDK

---
 Dockerfile | 47 ++++++++++++++++++++++-------------------------
 README.md  |  5 +++--
 2 files changed, 25 insertions(+), 27 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 4deb097..1c1773a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,6 @@ FROM ${BASE_IMAGE}
 
 ARG LLVM_VERSION=22
 ARG MESON_VERSION=latest
-ARG USE_LUNARG_VULKAN=false
 ARG LUNARG_SDK_VERSION=1.4.309.0
 
 ENV DEBIAN_FRONTEND=noninteractive
@@ -21,10 +20,14 @@ ENV AR=llvm-ar
 ENV RANLIB=llvm-ranlib
 ENV NM=llvm-nm
 ENV STRIP=llvm-strip
+ENV VULKAN_SDK=/opt/vulkan-sdk/current/x86_64
+ENV PATH="${VULKAN_SDK}/bin:${PATH}"
+ENV LD_LIBRARY_PATH="${VULKAN_SDK}/lib:${LD_LIBRARY_PATH}"
+ENV PKG_CONFIG_PATH="${VULKAN_SDK}/lib/pkgconfig:${PKG_CONFIG_PATH}"
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-# Base compiler/build/Python/Vulkan packages from Ubuntu.
+# Base compiler/build/Python packages from Ubuntu.
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     set -eux; \
     apt-get update; \
@@ -50,15 +53,7 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
       ninja-build \
       cmake \
       gcovr \
-      valgrind \
-      libvulkan-dev \
-      libshaderc-dev \
-      vulkan-tools \
-      vulkan-validationlayers \
-      mesa-vulkan-drivers \
-      glslang-tools \
-      spirv-tools \
-      spirv-headers; \
+      valgrind; \
     rm -rf /var/lib/apt/lists/*
 
 # LLVM/Clang from apt.llvm.org.
@@ -82,20 +77,19 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
       "llvm-${LLVM_VERSION}-tools"; \
     rm -rf /var/lib/apt/lists/*
 
-# Optional LunarG Vulkan SDK repo. Disabled by default because Ubuntu distro
-# Vulkan packages are more stable for CI and usually enough for building/testing.
-RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
+# LunarG Vulkan SDK from the official tarball.
+RUN --mount=type=cache,target=/root/.cache/vulkan-sdk \
     set -eux; \
-    if [ "${USE_LUNARG_VULKAN}" = "true" ]; then \
-      codename="$(. /etc/os-release && echo "${VERSION_CODENAME}")"; \
-      curl -fsSL https://packages.lunarg.com/lunarg-signing-key-pub.asc \
-        | gpg --dearmor -o /usr/share/keyrings/lunarg.gpg; \
-      echo "deb [signed-by=/usr/share/keyrings/lunarg.gpg] https://packages.lunarg.com/vulkan/${LUNARG_SDK_VERSION}/ubuntu ${codename} main" \
-        > /etc/apt/sources.list.d/lunarg-vulkan-sdk.list; \
-      apt-get update; \
-      apt-get install -y --no-install-recommends vulkan-sdk; \
-      rm -rf /var/lib/apt/lists/*; \
-    fi
+    sdk_archive="/root/.cache/vulkan-sdk/vulkansdk-linux-x86_64-${LUNARG_SDK_VERSION}.tar.xz"; \
+    if [ ! -f "${sdk_archive}" ]; then \
+      curl -fL "https://sdk.lunarg.com/sdk/download/${LUNARG_SDK_VERSION}/linux/vulkansdk-linux-x86_64-${LUNARG_SDK_VERSION}.tar.xz" \
+        -o "${sdk_archive}"; \
+    fi; \
+    mkdir -p /opt/vulkan-sdk; \
+    tar -xJf "${sdk_archive}" -C /opt/vulkan-sdk; \
+    ln -sfn "/opt/vulkan-sdk/${LUNARG_SDK_VERSION}" /opt/vulkan-sdk/current; \
+    echo "${VULKAN_SDK}/lib" > /etc/ld.so.conf.d/vulkan-sdk.conf; \
+    ldconfig
 
 # Make LLVM_VERSION the default clang toolchain.
 RUN set -eux; \
@@ -127,6 +121,9 @@ RUN set -eux; \
     clang --version; \
     clang++ --version; \
     meson --version; \
-    ninja --version
+    ninja --version; \
+    glslangValidator --version; \
+    spirv-val --version; \
+    pkg-config --modversion vulkan
 
 CMD ["bash"]
diff --git a/README.md b/README.md
index 00192fd..379c2e2 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,7 @@ Included tools:
 - Meson
 - Ninja
 - Python 3 / pip / venv
-- Vulkan headers/tools
-- Mesa Vulkan drivers
+- LunarG Vulkan SDK headers/tools
 - `build-essential`
 - `pkg-config`
 - Git
@@ -34,6 +33,8 @@ Included tools:
 
 ```bash
 docker build -t evol-testbed:latest .
+# Optional: choose a different LunarG Vulkan SDK version
+# docker build --build-arg LUNARG_SDK_VERSION=1.4.309.0 -t evol-testbed:latest .
 ```
 
 Test locally: