I had a project recently where I could use a template, but needed it to use a file that would be stored on disk. AKA I needed to move a file onto my railway instance. This became a big challenge, because afaik the only way to do this was using the Filebrowser template. From here I was able to get files onto the volume somewhere but I wasn't even sure where on the file structure they were. Without the ability to ssh or access my container's shell, I was working in the dark. My solution to this was to make a custom start command containing the real start command, prefixed with shell commands such as ls to try and figure out what I was dealing with. This became a huge hassle.

TLDR: It would be beneficial to have a better way to manually add files to a volume through the web interface or CLI.