I am using one Docker file for three services in a project to get Chron to work as I need it to.

I am getting the error "Cache mount ID is not prefixed with cache key" when I use the RAILWAY_SERVICE_ID variable in the mount line in the Dockerfile.

If I need to hardcode the <service id>, how do I do it for all three services? Separate lines or all on the same line? Or another way?

## Cache Mounts

Railway supports cache mounts in your Dockerfile in the following format:

```

--mount=type=cache,id=s/<service id>-<target path>,target=<target path>

```

Replace <service id> with the id of the service.

Thanks,
Ryan