Replace -_ or _- patterns with - (#111)

Docker appears to have an undocumented name rule that disallows dashes
(`-`) followed by underscores (`_`) (and `-`s after `_`), which caused
some of our projects to fail to build.

This PR fixes this issue by replacing these patterns (`[_-]{2, }`) with
`-`.

Author: DonggeLiu

experiment/evaluator.py

@@ -205,6 +205,8 @@ def do_check_target(self, ai_binary: str, target_path: str) -> Result:
     # Replace "::" and any character not \w, _, or . with "-".
     valid_docker_tag_name = re.sub(r'::', '-', self.benchmark.id)
     valid_docker_tag_name = re.sub(r'[^\w_.]', '-', valid_docker_tag_name)
+    # Docker fails with tags containing -_ or _-.
+    valid_docker_tag_name = re.sub(r'[-_]{2,}', '-', valid_docker_tag_name)
     generated_oss_fuzz_project = f'{valid_docker_tag_name}-{sample_id}'
     self.create_ossfuzz_project(generated_oss_fuzz_project, target_path)