Actions CI - move setup and docker into separate job
Actions CI - move setup and docker into separate job

Means that the docker build only happens once, instead of once for each matrix iteration

ewels/NGI-RNAseq,ewels/NGI-RNAseq,ewels/NGI-RNAseq,ewels/NGI-RNAseq,ewels/NGI-RNAseq