From d63e8b001708ec8c5f2c74b15b58f981919925a5 Mon Sep 17 00:00:00 2001
From: bo0tzz <git@bo0tzz.me>
Date: Tue, 18 Mar 2025 11:21:24 +0100
Subject: [PATCH] fix: diff against last commit on main branch (#92)

Signed-off-by: bo0tzz <git@bo0tzz.me>
---
 .github/workflows/docker.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 2a1ed08..ede9aeb 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -68,7 +68,8 @@ jobs:
       - name: Determine version change
         id: changed-version
         run: |
-          CHANGED_FILES=$(git diff --name-only origin/$GITHUB_BASE_REF...HEAD)
+          BASE=${{ github.event_name == 'pull_request' && format('origin/{0}', github.base_ref) || 'HEAD~1' }}
+          CHANGED_FILES=$(git diff --name-only $BASE...HEAD)
           echo $CHANGED_FILES
           # Looking for:
           # versions.yaml