fix: xon 0.8.5 specific changes

Author: SteveParson

docker-containers/xonotic/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 WORKDIR /opt
 
@@ -7,7 +7,7 @@ RUN apt-get -y install python3 python3-pip
 
 COPY Xonotic-clean .
 
-RUN mkdir -p /opt/server && touch /opt/server/server.cfg
+RUN mkdir -p /opt/data && touch /opt/data/server.cfg
 
 COPY sidecar-service/requirements.txt .
 COPY sidecar-service/sidecar-service.py .

docker-containers/xonotic/sidecar-service/sidecar-service.py

@@ -14,7 +14,7 @@
 DEBUG = bool(os.environ.get("DEBUG", False))
 CONFIG_URL = os.environ.get(
     "CONFIG_URL",
-    "https://raw.githubusercontent.com/xonotic/xonotic/master/server/server.cfg",
+    "https://raw.githubusercontent.com/xonotic/xonotic/a4eee56551654a2c34debfd450aa44eda2934e0b/server/server.cfg",
 )
 
 HOST = os.environ.get("HOST", "0.0.0.0")
@@ -41,7 +41,7 @@ def get_game_pid() -> Optional[int]:
 
 
 def write_config():
-    with open("/opt/server/server.cfg", "wb") as f:
+    with open("/opt/data/server.cfg", "wb") as f:
         f.write(requests.get(CONFIG_URL).content)