[llvm] [Github][Docker] Remove 'docker.io/library' from image name (PR #162007)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-github-workflow

Author: Baranov Victor (vbvictor)

<details>
<summary>Changes</summary>

Based on https://github.com/llvm/llvm-project/pull/161083#discussion_r2404139880, we don't specify explicitly `docker.io/library/`, this is the only violation I could find.

---
Full diff: https://github.com/llvm/llvm-project/pull/162007.diff


1 Files Affected:

- (modified) .github/workflows/containers/github-action-ci/Dockerfile (+1-1) 


``````````diff
diff --git a/.github/workflows/containers/github-action-ci/Dockerfile b/.github/workflows/containers/github-action-ci/Dockerfile
index dc0c9cabc7f01..c9aa0bbd31d81 100644
--- a/.github/workflows/containers/github-action-ci/Dockerfile
+++ b/.github/workflows/containers/github-action-ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/ubuntu:24.04 AS base
+FROM ubuntu:24.04 AS base
 ENV LLVM_SYSROOT=/opt/llvm
 
 FROM base AS stage1-toolchain

``````````

</details>


https://github.com/llvm/llvm-project/pull/162007