Fixes to steam locale and update policy

docker/Dockerfile-steam

@@ -25,6 +25,13 @@ RUN wget https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz
     tar -xzvf steamcmd.tar.gz -C /data/steamcmd && \
     cd /data/steamcmd
 
+## Generate en_US.UTF-8 locale require by steam incase missing
+RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
+        dpkg-reconfigure --frontend=noninteractive locales
+
+## Update steam to prevent steamguard code timeout
+RUN /data/steamcmd/steamcmd.sh +quit
+
 ## Don't set the arg earlier, if you need to rebuild the container
 ## it will cache up to here when you change the ENV VAR
 ARG STEAM_GUARD