refine doc; add more deploy instructions

deploy/ubuntu.md

@@ -0,0 +1,38 @@
+# Deploy redroid on ubuntu
+```
+# for 5.0+ kernel
+
+## Android required kernel features are packaged in `linux-modules-extra-xxx`
+apt install linux-modules-extra-`uname -r`
+modprobe binder_linux devices="binder,hwbinder,vndbinder"
+modprobe ashmem_linux
+
+## auto load modules
+cat /etc/modules-load.d/redroid.conf
+binder_linux
+ashmem_linux
+
+cat /etc/modprobe.d/redroid.conf
+options binder_linux devices="binder,hwbinder,vndbinder"
+
+
+# for kernel version before 5.0
+
+## option A:
+### upgrade to 5.0+ kernel
+### https://wiki.ubuntu.com/Kernel/LTSEnablementStack
+
+## option B:
+### check https://github.com/remote-android/redroid-modules
+### to install out of tree `binderfs` / `ashmem` kernel modules
+
+
+# running redroid
+docker run -itd --rm --privileged \
+    --pull always \
+    -v ~/data11:/data \
+    -p 5555:5555 \
+    --name redroid11 \
+    redroid/redroid:11.0.0-latest
+
+```