Look first for bazelisk, then bazel. Set the bazel disk/repo cache an…

…d output user root to paths that would allow envoy to compile (otherwise it fails due to too long path names)

.github/workflows/ci.yml

@@ -15,8 +15,13 @@ jobs:
     - name: setup
       run: |
         ./ci/install_windows_bazelisk.ps1
-    - name: run tests
-      run: ./otel_sdk_build.cmd
+    - name: run otel_sdk_build.cmd
+      run: |
+        echo "build --disk_cache=c:/b/d" > ../top.bazelrc1
+        echo "common --repository_cache=c:/b/r" >> ../top.bazelrc
+        echo "startup --output_user_root=f:/b/u" >> ../top.bazelrc
+        type ../top.bazelrc
+        ./otel_sdk_build.cmd
 
   # cmake_test:
   #   name: CMake test (without otlp-exporter)

otel_sdk_build.cmd

@@ -5,7 +5,8 @@ set BAZEL_SH=
 set BAZEL_VC=
 set BAZEL_VC_FULL_VERSION=
 
-for /F "usebackq" %%i in (`where bazel`) do set __BAZEL__=%%i
+rem Look first for bazelisk, then bazel
+for /F "usebackq" %%i in (`where bazelisk bazel`) do set __BAZEL__=%%i
 if "%__BAZEL__%"=="" goto:no-bazel
 
 set PATH=c:\windows\system32;c:\program files\python312