feat: added info log when container image platform mismatched (#826)

Refs nektos/act#3225

---

* added info log when container image platform mismatched

* inline image architecture comparison into ImageExistsLocally function as per review request

(cherry picked from commit 77d31c96a9486553908fdeb1c3053015238d5a0a)

<!--start release-notes-assistant-->
<!--URL:https://code.forgejo.org/forgejo/runner-->
- features
  - [PR](https://code.forgejo.org/forgejo/runner/pulls/826): <!--number 826 --><!--line 0 --><!--description ZmVhdDogYWRkZWQgaW5mbyBsb2cgd2hlbiBjb250YWluZXIgaW1hZ2UgcGxhdGZvcm0gbWlzbWF0Y2hlZA==-->feat: added info log when container image platform mismatched<!--description-->
<!--end release-notes-assistant-->

Co-authored-by: Ryan Fleet <[email protected]>
Reviewed-on: https://code.forgejo.org/forgejo/runner/pulls/826
Reviewed-by: Mathieu Fenniak <[email protected]>
Co-authored-by: Earl Warren <[email protected]>
Co-committed-by: Earl Warren <[email protected]>

Author: 2 people

act/container/docker_images.go

@@ -6,6 +6,7 @@ import (
 	"context"
 	"fmt"
 
+	"code.forgejo.org/forgejo/runner/v9/act/common"
 	cerrdefs "github.com/containerd/errdefs"
 	"github.com/docker/docker/api/types/image"
 )
@@ -26,10 +27,15 @@ func ImageExistsLocally(ctx context.Context, imageName, platform string) (bool,
 		return false, err
 	}
 
-	if platform == "" || platform == "any" || fmt.Sprintf("%s/%s", inspectImage.Os, inspectImage.Architecture) == platform {
+	imagePlatform := fmt.Sprintf("%s/%s", inspectImage.Os, inspectImage.Architecture)
+
+	if platform == "" || platform == "any" || imagePlatform == platform {
 		return true, nil
 	}
 
+	logger := common.Logger(ctx)
+	logger.Infof("image found but platform does not match: %s (image) != %s (platform)\n", imagePlatform, platform)
+
 	return false, nil
 }