This is a functin that preapre the docker environment to be used for the first time the docker4seq is installed.

downloadContainers(group = "docker", containers.file = "all")

## Arguments

group, a character string. Two options: "sudo" or "docker", depending to which group the user belongs a character string with the name of the file which indicate which are the initial set of containers to be downloaded. Initally the set is given by a file located in the folder containers of docker4seq package: "all", "rnaseq", "ncrnaseq", "chipseq"

## Examples

if (FALSE) {
#running runDocker
}