Typo --ti and missing my_strace_docker_image
@@ -243,7 +243,7 @@ $ docker run --name my-redis -d redis
Debug the redis container by running another container that has strace in it:
```bash
-$ docker run --it --pid=container:my-redis bash
+$ docker run -it --pid=container:my-redis my_strace_docker_image bash
$ strace -p 1
```
