Add missing script

server/scripts/inject-vars.sh

@@ -0,0 +1,7 @@
+for i in $(env | grep UPTIME_APP_)
+do
+    key=$(echo $i | cut -d '=' -f 1)
+    value=$(echo $i | cut -d '=' -f 2-)
+    echo $key=$value
+    find ./public/assets -type f \( -name '*.js' -o -name '*.css' \) -exec sed -i "s|${key}|${value}|g" '{}' +
+done