Add user for generic containers

This use will be used to run generic containers without letting them
have access to chronos-owned resources.

Change-Id: Id5c93f7ad22fcc66a7ea749fe1bc31a8d1dc065c
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/402268
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/profiles/base/accounts/group/user-containers b/profiles/base/accounts/group/user-containers
new file mode 100644
index 0000000..ff0034a
--- /dev/null
+++ b/profiles/base/accounts/group/user-containers
@@ -0,0 +1,3 @@
+group:user-containers
+gid:10000
+users:user-containers
diff --git a/profiles/base/accounts/user/user-containers b/profiles/base/accounts/user/user-containers
new file mode 100644
index 0000000..d4e58d6
--- /dev/null
+++ b/profiles/base/accounts/user/user-containers
@@ -0,0 +1,6 @@
+user:user-containers
+uid:10000
+gid:10000
+gecos:CrOS unprivileged containers
+home:/dev/null
+shell:/bin/false