Looks like i can install sdk using curl, but curl appears to not be available either in the container I’m running in. Maybe it’s impossible to do as a mortal user. I’ll talk to the sys admin.
fwiw, on my Mac I just use install everything (including sbt and curl) with brew (https://brew.sh), I don’t have sdkman installed. I think this is common
for installing Java, brew cask can do that
(I don’t doubt sdkman has strengths too, but I just want to be clear that it really isn’t required)