Update base image to Ubuntu 22.04 (#184)

* Update base image to Ubuntu 22.04 LTS

* Reduce launch logging errors

/tmp/dumps has been added to steam ownership, which SteamCMD uses for
storing dumps when issues occur. This is mainly to silence the ownership
error in the logs.

xdg-user-dirs has been added to the installed packages, as FactoryGame
server calls xdg-user-dir during initialization. These paths are not
used by the game, and the change is only to silence error messages.

Dockerfile

@@ -1,8 +1,8 @@
-FROM steamcmd/steamcmd:ubuntu-18
+FROM steamcmd/steamcmd:ubuntu-22
 
 RUN set -x \
  && apt-get update \
- && DEBIAN_FRONTEND=noninteractive apt-get install -y gosu --no-install-recommends\
+ && DEBIAN_FRONTEND=noninteractive apt-get install -y gosu xdg-user-dirs --no-install-recommends\
  && rm -rf /var/lib/apt/lists/* \
  && useradd -ms /bin/bash steam \
  && gosu nobody true

init.sh

@@ -72,5 +72,5 @@ else
     usermod -u "$PUID" steam
 fi
 
-chown -R "$PUID":"$PGID" /config /home/steam
-exec gosu "$USER" "/home/steam/run.sh" "$@"
+chown -R "$PUID":"$PGID" /config /home/steam /tmp/dumps
+exec gosu "$USER" "/home/steam/run.sh" "$@"