3737 git fetch origin ${{ github.base_ref }}
3838 merged_commit=$(git log -1 --format='%H')
3939 files=$(git diff --name-status --diff-filter=ARM ${{ github.event.pull_request.base.sha }} ${merged_commit} | awk '{print $2}' | grep -E 'Dockerfile$' || true)
40- echo "changed_files=$files"
4140 echo "files<<EOF" >> $GITHUB_OUTPUT
4241 echo "$files" >> $GITHUB_OUTPUT
4342 echo "EOF" >> $GITHUB_OUTPUT
@@ -50,17 +49,20 @@ jobs:
5049 while read -r dockerfile; do
5150 [ -z "$dockerfile" ] && continue
5251 dir=$(dirname "$dockerfile")
52+ file=$(basename "$dockerfile")
5353 image_base="pr-image-size-base:$(echo $dir | tr '/' '-')"
5454 image_pr="pr-image-size-pr:$(echo $dir | tr '/' '-')"
5555 cd $dir
5656 echo "Building base image for $dockerfile"
57- git checkout origin/${{ github.base_ref }} -- "$dockerfile"
58- docker build -f "$dockerfile" -t "$image_base" --no-cache .
57+ git checkout origin/${{ github.base_ref }}
58+ docker build -f "$file" -t "$image_base" --no-cache .
59+ cat $file
5960 size_base=$(docker image inspect "$image_base" | jq '.[0].Size / (1024 * 1024) | round')
6061
6162 echo "Building PR image for $dockerfile"
62- git checkout -- "$dockerfile" # restore PR version
63- docker build -f "$dockerfile" -t "$image_pr" --no-cache .
63+ git checkout ${{ github.event.pull_request.base.sha }}
64+ docker build -f "$file" -t "$image_pr" --no-cache .
65+ cat $file
6466 size_pr=$(docker image inspect "$image_pr" | jq '.[0].Size / (1024 * 1024) | round')
6567
6668 diff=$((size_pr - size_base))
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