[SDFAB-543] Add instruction and scripts of Docker environment

Change-Id: Ied8362240b2515985179d0d257652f8212a9bcfa
diff --git a/TestON/docker/fs/etc/supervisor/supervisord.conf b/TestON/docker/fs/etc/supervisor/supervisord.conf
new file mode 100644
index 0000000..eb23757
--- /dev/null
+++ b/TestON/docker/fs/etc/supervisor/supervisord.conf
@@ -0,0 +1,5 @@
+[supervisord]
+nodaemon=true
+
+[program:sshd]
+command=/usr/sbin/sshd -D