workflow: update README and RELEASE

RELEASE.md

@@ -0,0 +1,43 @@
+# Release #{GIT_VERSION}
+
+## Variants
+
+Download correct version for your platform:
+
+- Variant: **raspi**: Raspberry PI compatible build with USB, CSI, WebRTC, RTSP support
+- Variant: **generic**: All other platforms with USB and MJPEG support only for time being
+- System: **bullseye**: Debian Bullseye (11) compatible build
+- Platform: **amd64**: x86/64 compatible build
+- Platform: **arm32**: ARM 32-bit kernel: PIs 0.2W, 2B, and higher, Orange PIs, Rock64, etc. No support for RPI0.
+- Platform: **arm64**: ARM 64-bit kernel: PIs 0.2W, 3B, and higher, Orange PIs, Rock64, etc. No support for RPI0 and RPI2B.
+
+## Install on Raspberry PI or any other platform
+
+Copy the below and paste into terminal:
+
+```bash
+if [[ -e /etc/default/raspberrypi-kernel ]]; then
+  PACKAGE=camera-streamer-raspi_#{GIT_VERSION}.bullseye_$(dpkg --print-architecture).deb
+else
+  PACKAGE=camera-streamer-generic_#{GIT_VERSION}.bullseye_$(dpkg --print-architecture).deb
+fi
+wget "https://github.com/ayufan/camera-streamer/releases/download/#{GIT_VERSION}/$PACKAGE"
+sudo apt install "$PWD/$PACKAGE"
+```
+
+Enable one of provided systemd configuration:
+
+```bash
+ls -al /usr/share/camera-streamer/examples/
+systemctl enable /usr/share/camera-streamer/examples/camera-streamer-raspi-v3-12MP.service
+systemctl start camera-streamer-raspi-v3-12MP
+```
+
+You can also copy an existing service and fine tune it:
+
+```bash
+cp /usr/share/camera-streamer/examples/camera-streamer-raspi-v3-12MP.service /etc/systemd/system/camera-streamer.service
+edit /etc/systemd/system/camera-streamer.service
+systemctl enable camera-streamer
+systemctl start camera-streamer
+```