more like the csgo docker image

Dockerfile

@@ -1,7 +1,6 @@
 FROM cm2network/steamcmd:latest
-
+RUN mkdir -p /home/steam/server
 COPY start.sh /home/steam/start.sh
-
+VOLUME "/home/steam/server"
 WORKDIR /home/steam/
-
 ENTRYPOINT /home/steam/start.sh

README.md

@@ -4,9 +4,13 @@ Left 4 dead 2 server.
 - 27015
 - 27015/udp
 
+# Volumes 
+
+You can create a volume at `/home/steam/server` to not redownload the game every time you make a change at the docker-compose file.
+
 # Configuration
 
-The `server.cfg` gets created on the fly and gets filled with the enviroment variable starting with `CVAR_`. 
+You can set ANY conVar you want simply by prefixing the enviroment with `CVAR_`.
 So for example to set the RCON password set the enviroment variable `CVAR_RCON_PASSWORD=password123`. 
 Try to avoid variables with the word `CVAR_` and avoid `=` in it.
 

docker-compose.yml

@@ -10,9 +10,18 @@ services:
       - CVAR_SV_CONSISTENCY=1
       - CAVR_SV_VOICEENABLE=1
       - CVAR_MP_DISABLE_AUTOKICK=1
-    volumes:
-      - ./motd.txt:/motd.txt:ro
-      - ./host:txt:/host.txt:ro
+      - "MOTD_FILE_CONTENT=Put your MODT here. \n
+Multiline is also supported."
+      - "HOST_FILE_CONTENT=Same with the host file \n
+lalalalal"
     ports:
       - 27015:27015
       - 27015:27015/udp
+    volumes:
+      - l4d2_game:/home/steam/server
+    stdin_open: true
+    tty: true
+volumes:
+  l4d2_game:
+    name: l4d2_game
+

start.sh

@@ -2,30 +2,14 @@
 
 set -e
 
-echo "### Installing / Updateing l4d2 ###"
+/home/steam/steamcmd/steamcmd.sh  +login anonymous +force_install_dir "$HOME/server" +app_update 222860 validate +quit
 
-/home/steam/steamcmd/steamcmd.sh  +login anonymous +force_install_dir $HOME/server +app_update 222860 validate +quit
+echo -n "$MOTD_FILE_CONTENT" > "$HOME/server/left4dead2/motd.txt"
 
-echo "### Creating config ###"
+echo -n "$HOST_FILE_CONTENT" > "$HOME/server/left4dead2/host.txt"
 
-env | awk -F "=" '/^CVAR_/ {sub("CVAR_","",$1); print tolower($1),($2 ~ /^[0-9]+$/)?$2:"\""$2"\""}' > $HOME/server/left4dead2/cfg/server.cfg
+env | awk -F "=" '/^CVAR_/ {sub("CVAR_","",$1); print tolower($1),($2 ~ /^[0-9]+$/)?$2:"\""$2"\""}' > /home/steam/server/left4dead2/cfg/server.cfg
 
-echo "### Using follwing config: "
-cat $HOME/server/left4dead2/cfg/server.cfg
-echo "###"
+cat /home/steam/server/left4dead2/cfg/server.cfg
 
-echo "### Linking host and motd file ### "
-
-if [[ -f "/motd.txt" ]]; then
-    rm $HOME/server/left4dead2/motd.txt
-    ln -sf /motd.txt $HOME/server/left4dead2/motd.txt
-fi
-
-if [[ -f "/host.txt" ]]; then
-    rm $HOME/server/left4dead2/host.txt
-    ln -sf /host.txt $HOME/server/left4dead2/host.txt
-fi
-
-echo "### Starting l4d2 ###"
-
-$HOME/server/srcds_run -console -game left4dead2 +maxplayers 16 -maxclients 16 -ip 0.0.0.0 +map c1m1_hotel
+"$HOME/server/srcds_run" -console -game left4dead2 +maxplayers 16 -maxclients 16 -ip 0.0.0.0