Update to 2.0.0.beta3

Added entrypoint to Docker image
Fixed issues with CORS when behind reverse-proxy
Added APP_URL environment variable

docker/entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -e
+
+if [ -n "$PUID" ] && [ -n "$PGID" ]; then
+  groupmod -o -g "$PGID" gameyfin
+  usermod -o -u "$PUID" gameyfin
+  chown -R gameyfin:gameyfin /opt/gameyfin
+  exec su-exec gameyfin:gameyfin java -jar gameyfin.jar
+else
+  exec su-exec gameyfin:gameyfin java -jar gameyfin.jar
+fi