diff --git a/skills/build-and-dependency/SKILL.md b/skills/build-and-dependency/SKILL.md
index c7dc89ec1ad..7c8dc252e54 100644
--- a/skills/build-and-dependency/SKILL.md
+++ b/skills/build-and-dependency/SKILL.md
@@ -209,3 +209,4 @@ files before committing (repo CLAUDE.md requirement).
 | `No space left on device` during uv ops | Cache fills container's `/root/.cache/` | Mount a host cache dir via `-v $HOME/.cache/uv:/root/.cache/uv` |
 | Pre-commit fails with linting errors | Code style violations | Run `BASE_REF=main CHECK_ONLY=false bash tools/autoformat.sh` |
 | `docker build` fails with secret-related error | `Dockerfile.ci.dev` has a `jet` stage that requires an internal secret | Add `--target main` to stop before the `jet` stage |
+| `access forbidden` when pulling | Registry URL includes an explicit port (e.g. `:5005`) | Use `${GITLAB_HOST}/adlr/...` with no port — the sed extracts the hostname only |