wine-mono has gone bye-bye from Arch...fix Dockerfile accordingly

Dockerfile

@@ -1,4 +1,4 @@
 FROM ghcr.io/linuxserver/baseimage-kasmvnc:arch
-RUN (echo "[multilib]"; echo "Include = /etc/pacman.d/mirrorlist") | tee -a /etc/pacman.conf && pacman -Syu || true && pacman -S --noconfirm wine wine-mono wine-gecko && yes | pacman -Scc
+RUN tee -a /etc/pacman.conf && pacman -Syu || true && pacman -S --noconfirm wine wine-gecko && yes | pacman -Scc
 ADD --chown=911:911 . /config/app
 COPY /root /

README.md

@@ -13,3 +13,7 @@ to use the name of your program's main executable.  You'll also need to fix dock
 network.  I use caddy-docker-proxy to publish a bunch of apps (including ProMash) on my home server, but if you
 use something else, you'll want to either aim whatever proxy server you're using to port 8080 or include a ```ports```
 block to expose port 8080.
+
+In any case, ```docker compose build && docker compose run -d``` will bring up the container.  The first time it
+starts, Wine will ask you to let it install wine-mono.  If the application you want to run needs .NET, pick OK.
+If it doesn't, it is safe to pick Cancel; you won't be asked about it again.