add Gentoo Linux support

deploy/README.md

@@ -25,6 +25,7 @@ resort, custom kernels are always capable.
 - [centos](centos.md)
 - [debian](debian.md)
 - [fedora](fedora.md)
+- [Gentoo](gentoo.md)
 - [kubernetes](kubernetes.md)
 - [Mint](mint.md)
 - [ubuntu](ubuntu.md)

deploy/gentoo.md

@@ -0,0 +1,16 @@
+# Deploy redroid on Gentoo
+
+```
+## tested on 5.18.5-gentoo-dist kernel
+## binderfs etc. already enabled
+
+## run with memfd enabled
+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
+
+```