Add "rng-tools" to Raspberry PI Alpine release.
If the SBC is used as a headless server, there could be entropy issues. The rPi SBCs have /dev/hwrng, and rng-tools will use this by default.
(from redmine: issue id 8819, created on 2018-04-19)
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information