update url env

Dockerfile

@@ -3,4 +3,6 @@ RUN mkdir -p /home/steam/server
 COPY start.sh /home/steam/start.sh
 VOLUME "/home/steam/server"
 WORKDIR /home/steam/
+ENV METAMOD_DL_URL "https://mms.alliedmods.net/mmsdrop/1.11/mmsource-1.11.0-git1145-linux.tar.gz"
+ENV SOURCEMOD_DL_URL "https://sm.alliedmods.net/smdrop/1.10/sourcemod-1.10.0-git6524-linux.tar.gz"
 ENTRYPOINT /home/steam/start.sh

README.md

@@ -1,4 +1,4 @@
-Left 4 dead 2 server.
+Left 4 dead 2 server. With Metamod and Sourcemod.
 
 # Ports
 - 27015
@@ -15,3 +15,6 @@ So for example to set the RCON password set the enviroment variable `CVAR_RCON_P
 Try to avoid variables with the word `CVAR_` and avoid `=` in it.
 
 A list of available cvars can be found [here](https://developer.valvesoftware.com/wiki/List_of_L4D2_Cvars).
+
+If there is a new version of Metamod or Sourcemod and is not yet set in the image you can manually set the download URL in `METAMOD_DL_URL` and `SOURCEMOD_DL_URL`.
+It will only get update if the addon directory is empty.

start.sh

@@ -7,12 +7,12 @@ set -e
 
 if [ ! -e "$HOME/server/left4dead2/addons/metamod.vdf" ]; then
     echo "Installing Metamod"
-    curl https://mms.alliedmods.net/mmsdrop/1.11/mmsource-1.11.0-git1145-linux.tar.gz -o /tmp/metamod.tar.gz
+    curl "$METAMOD_DL_URL" -o /tmp/metamod.tar.gz
     tar -xf /tmp/metamod.tar.gz -C "$HOME/server/left4dead2"
     rm /tmp/metamod.tar.gz
 
     echo "Install Sourcemod"
-    curl https://sm.alliedmods.net/smdrop/1.10/sourcemod-1.10.0-git6524-linux.tar.gz -o /tmp/sourcemod.tar.gz
+    curl "$SOURCEMOD_DL_URL" -o /tmp/sourcemod.tar.gz
     tar -xf /tmp/sourcemod.tar.gz -C "$HOME/server/left4dead2"
     rm /tmp/sourcemod.tar.gz
 fi