docker/unified: add ik_llama.cpp to CUDA container (#620)

docker/unified/install-ik-llama.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+# Install ik_llama.cpp - clone, build, and install binaries
+# Usage: ./install-ik-llama.sh <commit_hash>
+# Note: CUDA only; always built against builder-base-cuda
+set -e
+
+COMMIT_HASH="${1:-main}"
+
+mkdir -p /install/bin
+
+# Clone and checkout (init-based so cache-mounted build dir doesn't break clone)
+echo "=== Cloning ik_llama.cpp at ${COMMIT_HASH} ==="
+mkdir -p /src/ik_llama.cpp
+cd /src/ik_llama.cpp
+if [ ! -d .git ]; then
+    git init
+    git remote add origin https://github.com/ikawrakow/ik_llama.cpp.git
+fi
+git fetch --depth=1 origin "${COMMIT_HASH}"
+git checkout FETCH_HEAD
+
+CMAKE_FLAGS=(
+    -DGGML_NATIVE=OFF
+    -DBUILD_SHARED_LIBS=OFF
+    -DCMAKE_BUILD_TYPE=Release
+    -DCMAKE_C_COMPILER_LAUNCHER=ccache
+    -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+    -DGGML_CUDA=ON
+    "-DCMAKE_CUDA_ARCHITECTURES=${CMAKE_CUDA_ARCHITECTURES:-60;61;75;86;89}"
+    "-DCMAKE_CUDA_FLAGS=-allow-unsupported-compiler"
+    "-DCMAKE_EXE_LINKER_FLAGS=-Wl,-rpath-link,/usr/local/cuda/lib64/stubs -lcuda -Wl,--allow-shlib-undefined"
+)
+
+rm -rf build/CMakeCache.txt build/CMakeFiles 2>/dev/null || true
+
+echo "=== Building ik_llama.cpp ==="
+cmake -B build "${CMAKE_FLAGS[@]}"
+cmake --build build --config Release -j"$(nproc)" --target llama-server
+
+if [ ! -f "build/bin/llama-server" ]; then
+    echo "FATAL: llama-server not found in build/bin/" >&2
+    exit 1
+fi
+
+# Install as ik-llama-server to avoid collision with llama.cpp's llama-server
+cp "build/bin/llama-server" "/install/bin/ik-llama-server"
+echo "=== ik_llama.cpp build complete ==="
+ls -la /install/bin/