Fix integration tests

cmd/executor/cmd/root.go

@@ -63,7 +63,7 @@ var RootCmd = &cobra.Command{
 			return errors.Wrap(err, "error resolving source context")
 		}
 		if err := removeIgnoredFiles(); err != nil {
-			return errors.Wrap(err, "error removing ignored files from build context")
+			return errors.Wrap(err, "error removing .dockerignore files from build context")
 		}
 		return resolveDockerfilePath()
 	},
@@ -198,9 +198,11 @@ func removeIgnoredFiles() error {
 	for r, i := range ignore {
 		ignore[r] = filepath.Clean(filepath.Join(opts.SrcContext, i))
 	}
+	// first, remove all files in .dockerignore
 	err = filepath.Walk(opts.SrcContext, func(path string, fi os.FileInfo, _ error) error {
 		if ignoreFile(path, ignore) {
 			if err := os.RemoveAll(path); err != nil {
+				// don't return error, because this path could have been removed already
 				logrus.Debugf("error removing %s from buildcontext", path)
 			}
 		}
@@ -209,10 +211,12 @@ func removeIgnoredFiles() error {
 	if err != nil {
 		return err
 	}
+	// then, remove .dockerignore
 	path := filepath.Join(opts.SrcContext, ".dockerignore")
 	return os.Remove(path)
 }
 
+// ignoreFile returns true if the path matches any of the paths in ignore
 func ignoreFile(path string, ignore []string) bool {
 	for _, i := range ignore {
 		matched, err := filepath.Match(i, path)