Allowlist HTTP and HTTPS ENV in Singularity
On restricted HPCs (e.g. with SLURM) and when using Singularity, it can happen that Nextflow needs to pass specific environment configurations for allow-listed URLs to the Singularity containers. This can be achieved via
envWhitelist = "HTTPS_PROXY,HTTP_PROXY,http_proxy,https_proxy,FTP_PROXY,ftp_proxy"
In the nextflow.config
which is now a default when using Singularity.