Pre-imports failing due to unsupported SIF media types
Context
Found during gitlab#350920 (closed).
Problem
A pre import failed due to:
pre importing tagged manifests: pre importing manifest: pre importing manifest: unknown media type: application/vnd.sylabs.sif.config.v1+json
Solution
Add support for application/vnd.sylabs.sif.config.v1+json
and while at it also application/vnd.sylabs.sif.layer.v1.sif
Edited by Jaime Martinez