The [R example](https://github.com/populationgenomics/analysis-runner/blob/2325b034b1d4a4fe6c05486727cc1d3813e6fce0/examples/r/script.R#L23-L24) is still accessing environment variables instead of [reading the TOML config blob](https://github.com/populationgenomics/cpg-utils/pull/35).