feat: expose boss via nginx base path

scripts/server_start.sh

@@ -6,6 +6,12 @@ data_dir="${BOSS_DATA_DIR:-.boss-data}"
 data_file="${BOSS_DATA_FILE:-$data_dir/server-store.json}"
 pid_file="${BOSS_PID_FILE:-$data_dir/server.pid}"
 log_file="${BOSS_LOG_FILE:-$data_dir/server.log}"
+base_path="${BOSS_BASE_PATH:-}"
+if [[ -n "$base_path" && "$base_path" != /* ]]; then
+  base_path="/$base_path"
+fi
+base_path="${base_path%/}"
+health_url="http://127.0.0.1:${port}${base_path}/api/health"
 
 mkdir -p "$data_dir"
 
@@ -27,7 +33,7 @@ nohup env PORT="$port" BOSS_DATA_FILE="$data_file" node dist/server.js >>"$log_f
 echo $! > "$pid_file"
 
 for _ in {1..30}; do
-  if curl -fsS "http://127.0.0.1:${port}/api/health" >/dev/null 2>&1; then
+  if curl -fsS "$health_url" >/dev/null 2>&1; then
     echo "Boss server started on :${port}"
     exit 0
   fi