allow -c config

entrypoint.sh

 #!/bin/bash
 
 pid=0
-down=$(echo "$1" | jq -r '.routers | .[].down')
+
+downs=()
+
+if [ "${1:-}" = "-c" ] || [ "${1:-}" = "--config" ]; then
+  config_file="$2"
+  # 从文件直接 cat 管道给 jq
+  while IFS= read -r d; do
+    downs+=("$d")
+  done < <(cat "$config_file" | jq -r '.routers[].down')
+else
+  # 直接把参数当作 JSON 字符串传给 jq，不存到变量
+  while IFS= read -r d; do
+    downs+=("$d")
+  done < <(printf '%s' "$1" | jq -r '.routers[].down')
+fi
+
 echo "$down"
 run_stop() {
   signalCode=$1
-  if [ -n "$down" ]; then
+  for down in "${downs[@]}"; do
     eval "$down"
-  fi
+  done
   if [ $pid -ne 0 ]; then
     kill "-$signalCode" "$pid"
     wait "$pid"

src/main.rs

@@ -15,7 +15,25 @@ use std::{env, mem::MaybeUninit};
 
 fn main() -> Result<()> {
     println!("Starting");
-    let config = serde_json::from_str::<Config>(env::args().nth(1).context("need param")?.as_str())?;
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        return Err("need JSON string or -c <config.json>".into());
+    }
+
+    let config: Config;
+
+    if args[1] == "-c" || args[1] == "--config" {
+        // 从文件读
+        if args.len() < 3 {
+            return Err("missing value for -c/--config".into());
+        }
+        let data = fs::read_to_string(&args[2])?;
+        config = serde_json::from_str(&data)?;
+    } else {
+        // 当作 JSON 字符串解析
+        config = serde_json::from_str(&args[1])?;
+    }
+    println!("Read config");
 
     let routers = &config
         .routers