Docker not required.
This package contains all that is needed for Rpi2 and Rp3, and works fine:
Just uncompress this archive, add your spotify_appkey.key and start:
./spotify-connect-web -u USERAME -p PASSWORD
You need alsa for it to work, so
in /flash/config for jack and hdmi
For hifiberry and likes, you just need to activate the according overlay
Config.txt - OpenELEC
Et voila, your Pi (2 or 3) is a spotify connect device
Can you explain the ALSA step for me?
When i run the spotify-connect-web in the ssh terminal i get an ALSA error.
So im guessing in need some settings to do.