Add fd section for linux container process

mrunalp · mrunalp · commit 3174a0341d79 · 2015-08-21T14:45:39.000-04:00
Signed-off-by: Mrunal Patel &lt;mrunalp@gmail.com&gt;
diff --git a/runtime-linux.md b/runtime-linux.md
@@ -0,0 +1,3 @@
+## File descriptors
+By default, only the `stdin`, `stdout` and `stderr` file descriptors are kept open for the container process by the runtime.
+The runtime may leak additional file descriptors into the container process to support features such as [socket activation](http://0pointer.de/blog/projects/socket-activated-containers.html).

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+## File descriptors`
	`2`	+By default, only the `stdin`, `stdout` and `stderr` file descriptors are kept open for the container process by the runtime.
	`3`	`+The runtime may leak additional file descriptors into the container process to support features such as [socket activation](http://0pointer.de/blog/projects/socket-activated-containers.html).`