diff --git a/crypto/leak_d/crack.py b/crypto/leak_d/crack.py
index e850292..32ed9a0 100644
--- a/crypto/leak_d/crack.py
+++ b/crypto/leak_d/crack.py
@@ -1,7 +1,7 @@
 from Crypto.Util.number import * # type: ignore
 from pwn import * # type: ignore
 
-r = remote("localhost",10001)
+r = remote("172.20.14.117",28471)
 r.recvline()
 n = r.recvline()
 n = int(n.decode())
diff --git a/crypto/leak_d/dockerfile b/crypto/leak_d/dockerfile
new file mode 100644
index 0000000..a76dd29
--- /dev/null
+++ b/crypto/leak_d/dockerfile
@@ -0,0 +1,13 @@
+FROM python:3.11
+
+COPY requirements.txt /app/
+
+COPY leak_d.py /app/
+
+WORKDIR /app
+
+RUN pip install -r requirements.txt -i https://mirrors.ustc.edu.cn/pypi/web/simple
+
+EXPOSE 10001
+
+CMD [ "python", "leak_d.py" ]
\ No newline at end of file
diff --git a/crypto/leak_d/leak_d.py b/crypto/leak_d/leak_d.py
index ee6c7ad..5114db1 100644
--- a/crypto/leak_d/leak_d.py
+++ b/crypto/leak_d/leak_d.py
@@ -59,8 +59,8 @@ class ForkedServer(socketserver.ForkingMixIn, socketserver.TCPServer):
 
 
 if __name__ == "__main__":
-    # flag = bytes(os.getenv("FLAG"),"utf-8")
-    flag = b"testflag"
+    flag = bytes(os.getenv("FLAG"),"utf-8")
+    #flag = b"testflag"
     HOST, PORT = '0.0.0.0', 10001
     server = ForkedServer((HOST, PORT), Task)
     server.allow_reuse_address = True
diff --git a/crypto/leak_d/requirements.txt b/crypto/leak_d/requirements.txt
new file mode 100644
index 0000000..c21b6ec
--- /dev/null
+++ b/crypto/leak_d/requirements.txt
@@ -0,0 +1 @@
+pycryptodome
\ No newline at end of file