From b9c6d16ff02e4f88b5a63cbe37ecc02909088148 Mon Sep 17 00:00:00 2001
From: YoursFunny <admin@yoursfunny.top>
Date: Thu, 17 Sep 2026 11:38:49 +0800
Subject: [PATCH] docs(ci): note why the docker job skips actions/checkout

build-push-action defaults to the Git context, so BuildKit clones the
repo itself and the job never needs the workspace.
---
 .github/workflows/docker.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 0699964..48ed31b 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -80,6 +80,11 @@ jobs:
             echo "build=true" >> "$GITHUB_OUTPUT"
           fi
 
+  # No `actions/checkout` here on purpose: `docker/build-push-action` defaults
+  # to the Git context (`https://github.com/<owner>/<repo>.git#<ref>`), so
+  # BuildKit clones the repo itself and authenticates with the automatic
+  # github.token. Adding `context: .` below without a checkout step would hand
+  # BuildKit an empty workspace.
   docker:
     needs: should-build
     if: needs.should-build.outputs.build == 'true'