shellcheck: Make pipeline dir relative to file

Signed-off-by: Jon Johnson <jon.johnson@chainguard.dev>

Author: jonjohnsonjr

pre_commit_hooks/shellcheck_run_steps.py

@@ -122,7 +122,7 @@ def main(argv: Sequence[str] | None = None) -> int:
                     MelangeImage,
                     "compile",
                     f"--arch={arch}",
-                    "--pipeline-dir=./pipelines",
+                    f"--pipeline-dir=./{os.path.dirname(filename)}/pipelines",
                     filename,
                 ],
                 stdout=compiled_out,