kaczmarj/neurodocker: Version 0.5.0

Hello Neurodocker users! I am pleased to announce version 0.5.0, which adds FSL 6 and 6.0.1 and fixes several bugs. The jump to 0.5 from 0.4 is meant to indicate Neurodocker's approach towards stability. If you encounter issues using this version, please submit an issue or a pull request.

Run the versioned Docker image with docker run --rm kaczmarj/neurodocker:0.5.0

• FSL 6.0.0 and 6.0.1

• check if a user exists before creating them
• remove fsl dependency that cannot be found in some repositories
• afni system package names
• run nd_freeze before removing the apt list
• use conda clean --all instead of conda clean -tipsy
• set USER=$(whoami) if USER is not set
• do not remove /tmp/* or /var/tmp/* (this caused issues when building singularity images)
• add save method to singularity generator
• use new URL for libpng12-0 in afni template