ci: run bench test in docker (#33944)

* ci: run bench test in docker

* ci: fix bench test triggering rule

.buildkite/scripts/build-bench.sh

@@ -22,5 +22,5 @@ EOF
 
 # shellcheck disable=SC2016
 group "bench" \
-  "$(build_steps "bench-part-1" "ci/bench/part1.sh")" \
-  "$(build_steps "bench-part-2" "ci/bench/part2.sh")"
+  "$(build_steps "bench-part-1" ". ci/rust-version.sh; ci/docker-run.sh \$\$rust_nightly_docker_image ci/bench/part1.sh")" \
+  "$(build_steps "bench-part-2" ". ci/rust-version.sh; ci/docker-run.sh \$\$rust_nightly_docker_image ci/bench/part2.sh")"

ci/buildkite-pipeline.sh

@@ -240,6 +240,8 @@ EOF
              ^ci/rust-version.sh \
              ^ci/test-coverage.sh \
              ^ci/test-bench.sh \
+             ^ci/bench \
+             .buildkite/scripts/build-bench.sh \
       ; then
     .buildkite/scripts/build-bench.sh >> "$output_file"
   else