diff --git a/lib/util/exec/index.ts b/lib/util/exec/index.ts
index 30e9bba6fa55342e57bf7b2e2c8d86ce60a1c7b9..3eda80bc0d7674450bba84c30053602ff1b6da9b 100644
--- a/lib/util/exec/index.ts
+++ b/lib/util/exec/index.ts
@@ -116,7 +116,7 @@ async function prepareRawExec(
   let rawCommands = typeof cmd === 'string' ? [cmd] : cmd;
 
   if (isDocker(docker)) {
-    logger.debug(`Using docker to execute image: ${docker.image}`);
+    logger.debug({ image: docker.image }, 'Using docker to execute');
     const extraEnv = {
       ...opts.extraEnv,
       ...customEnvVariables,