Suppose my repository class looks like this:

class myRepository : IDisposable{
    private DataContext _context;
    public myRepository(DataContext context){
        _context = context;
    }
    public void Dispose(){ 
        // to do: implement dispose of DataContext
    }
}

now, I am using Unity to control the lifetime of my repository & the data context & configured the lifetimes as:
DataContext - singleton
myRepository - create a new instance each time

Does this mean that I should not be implementing the IDisposable on the repository to clean up the DataContext?

Any guidance on such items?