refine doc; add more deploy instructions

deploy/debian.md

@@ -0,0 +1,21 @@
+# Deploy redroid on Debian
+```
+## Debian 11 (kernel 5.18)
+
+### the included `binder_linux` NOT support `binderfs`
+### so use custom kernel here
+
+### enable binderfs
+CONFIG_ANDROID_BINDERFS=y
+CONFIG_ANDROID_BINDER_DEVICES="binder,hwbinder,vndbinder"
+
+
+### running redroid
+docker run -itd --rm --privileged \
+    --pull always \
+    -v ~/data11:/data \
+    -p 5555:5555 \
+    --name redroid11 \
+    redroid/redroid:11.0.0-latest \
+    androidboot.use_memfd=1
+```