Prefix format command with docker_run
This is so that newcomers don't run into accidential issues with their local setup by running the command directly.
@@ -62,8 +62,9 @@ are squashed against the correct commit if necessary.
## Style Guide
-Before submitting your PR, we ask you to run `./scripts/runner format`, which
-formats code & docs according to our style guide.
+Before submitting your PR, we ask you to run
+`./scripts/docker_run ./scripts/runner format`, which formats code & docs
+according to our style guide.
### Rust
