build: generate binaries for Linux armv6, armv7 and arm68 (v8) (fixes #92)

README.md

@@ -34,7 +34,6 @@ This project is being actively worked on. Expect a more polished experience and
 on a frequent basis. Some upcoming features planned: 
 
 - Last.FM integration
-- Pre-build binaries for Raspberry Pi
 - Smart/dynamic playlists (similar to iTunes)
 - Support for audiobooks (bookmarking)
 - Jukebox mode
@@ -49,7 +48,8 @@ Various options are available:
 ### Pre-built executables
 
 Just head to the [releases page](https://github.com/deluan/navidrome/releases) and download the latest version for you 
-platform. There are builds available for Linux, macOS and Windows (32 and 64 bits). 
+platform. There are builds available for Linux (amd64 and arm), macOS and Windows (32 and 64 bits). 
+For Raspberry Pi (tested with Raspbian Buster on Pi 4), use the Linux arm builds.
 
 Remember to install [ffmpeg](https://ffmpeg.org/download.html) in your system, a requirement for Navidrome to work properly.
 You may find the latest static build for your platform here: https://johnvansickle.com/ffmpeg/