add option for branch

README.md

@@ -11,6 +11,7 @@ services:
     volumes:
       - "./vintagestory:/data"
     environment:
+      - "VS_BRANCH=stable"
       - "VS_VERSION=1.20.7"
     ports:
       - "42420:42420/tcp"

entry.sh

@@ -6,7 +6,12 @@ if [[ ! -v VS_VERSION ]]; then
     exit 1
 fi
 
-wget https://cdn.vintagestory.at/gamefiles/stable/vs_server_linux-x64_${VS_VERSION}.tar.gz
+if [[ ! -v VS_BRANCH ]]; then
+    echo "You need to set the VS_BRANCH env variable."
+    exit 1
+fi
+
+wget https://cdn.vintagestory.at/gamefiles/${VS_BRANCH}/vs_server_linux-x64_${VS_VERSION}.tar.gz
 tar xzf vs_server_linux-*.tar.gz
 rm vs_server_linux-*.tar.gz