Adding Sunshine pre/post scripts

Dockerfile

@@ -545,6 +545,7 @@ RUN apt-get update \
 COPY desktop-entrypoint.sh /etc/desktop-entrypoint.sh
 COPY sunshine-entrypoint.sh /etc/sunshine-entrypoint.sh
 COPY supervisord.conf /etc/supervisord.conf
+COPY --chmod=0755 scripts/ /usr/local/bin/
 
 RUN sed -i 's/\r$//' \
         /etc/desktop-entrypoint.sh \