How to resolve failed to compute cache key: "/esy.lock" not found: not found error when running build.sh

Hi there. I'm trying to spin up a lambda function, but when I run the `build.sh` file (after adapting the `build.sh` and `Dockerfile` scripts to my project -- basically just removing the `examples/basic/` stuff), I get the following error:

```
failed to compute cache key: "/esy.lock" not found: not found
```

I'm happy to provide more details if needed. But is there any quick fix for this that comes to mind? Thanks so much for the work on this project.