diff --git a/gns3server/modules/docker/docker_vm.py b/gns3server/modules/docker/docker_vm.py
index ddb01e1e..ca60bbd5 100644
--- a/gns3server/modules/docker/docker_vm.py
+++ b/gns3server/modules/docker/docker_vm.py
@@ -338,11 +338,11 @@ class DockerVM(BaseVM):
         # We can not use the API because docker doesn't expose a websocket api for exec
         # https://github.com/GNS3/gns3-gui/issues/1039
         process = yield from asyncio.subprocess.create_subprocess_exec(
-            "docker", "exec", "-i", self._cid, "/gns3/bin/busybox", "sh", "-i",
+            "docker", "exec", "-i", self._cid, "/gns3/bin/busybox", "script", "-qfc", "/gns3/bin/busybox sh", "/dev/null",
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.STDOUT,
             stdin=asyncio.subprocess.PIPE)
-        server = AsyncioTelnetServer(reader=process.stdout, writer=process.stdin, binary=False, echo=False)
+        server = AsyncioTelnetServer(reader=process.stdout, writer=process.stdin, binary=True, echo=True)
         self._telnet_servers.append((yield from asyncio.start_server(server.run, self._manager.port_manager.console_host, self.aux)))
         log.debug("Docker container '%s' started listen for auxilary telnet on %d", self.name, self.aux)
 
diff --git a/gns3server/modules/docker/resources/bin/busybox b/gns3server/modules/docker/resources/bin/busybox
index 08235d5e..50aa17f6 100755
Binary files a/gns3server/modules/docker/resources/bin/busybox and b/gns3server/modules/docker/resources/bin/busybox differ
diff --git a/gns3server/utils/asyncio/telnet_server.py b/gns3server/utils/asyncio/telnet_server.py
index 783f0970..c58af69d 100644
--- a/gns3server/utils/asyncio/telnet_server.py
+++ b/gns3server/utils/asyncio/telnet_server.py
@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import re
 import asyncio
 import asyncio.subprocess