fix: pass UV env vars in all remaining docker build locations

Updated install-script-ci.yml workflow and scripts/docker.sh to pass
UV_EXTRA_INDEX_URL and UV_INDEX_STRATEGY as build args, ensuring all
docker build invocations handle RC dependencies correctly.

.github/workflows/install-script-ci.yml

@@ -30,10 +30,16 @@ jobs:
 
       - name: Build a single provider
         run: |
+          BUILD_ARGS="--build-arg INSTALL_MODE=editable --build-arg DISTRO_NAME=starter"
+          if [ -n "${UV_EXTRA_INDEX_URL:-}" ]; then
+            BUILD_ARGS="$BUILD_ARGS --build-arg UV_EXTRA_INDEX_URL=$UV_EXTRA_INDEX_URL"
+          fi
+          if [ -n "${UV_INDEX_STRATEGY:-}" ]; then
+            BUILD_ARGS="$BUILD_ARGS --build-arg UV_INDEX_STRATEGY=$UV_INDEX_STRATEGY"
+          fi
           docker build . \
             -f containers/Containerfile \
-            --build-arg INSTALL_MODE=editable \
+            $BUILD_ARGS \
-            --build-arg DISTRO_NAME=starter \
             --tag llama-stack:starter-ci
 
       - name: Run installer end-to-end

scripts/docker.sh

@@ -215,6 +215,16 @@ build_image() {
         --build-arg "LLAMA_STACK_DIR=/workspace"
     )
 
+    # Pass UV index configuration for release branches
+    if [[ -n "${UV_EXTRA_INDEX_URL:-}" ]]; then
+        echo "Adding UV_EXTRA_INDEX_URL to docker build: $UV_EXTRA_INDEX_URL"
+        build_cmd+=(--build-arg "UV_EXTRA_INDEX_URL=$UV_EXTRA_INDEX_URL")
+    fi
+    if [[ -n "${UV_INDEX_STRATEGY:-}" ]]; then
+        echo "Adding UV_INDEX_STRATEGY to docker build: $UV_INDEX_STRATEGY"
+        build_cmd+=(--build-arg "UV_INDEX_STRATEGY=$UV_INDEX_STRATEGY")
+    fi
+
     if ! "${build_cmd[@]}"; then
         echo "❌ Failed to build Docker image"
         exit 1