From e506fcd9314d3402c9e83974e9cc335348b53360 Mon Sep 17 00:00:00 2001
From: Ian Lewis <ianlewis@google.com>
Date: Thu, 9 Jul 2020 15:25:35 -0700
Subject: Add args and netns flag to runsc spec

Adds a netns flag to runsc spec that allows users to specify a network
namespace path when creating a sample config.json file. Also, adds the ability
to specify the command arguments used when running the container.

This will make it easier for new users to create sample OCI bundles without
having to edit the config.json by hand.

PiperOrigin-RevId: 320486267
---
 g3doc/user_guide/quick_start/oci.md | 10 ++++------
 g3doc/user_guide/tutorials/cni.md   | 14 ++++++++------
 2 files changed, 12 insertions(+), 12 deletions(-)

(limited to 'g3doc/user_guide')

diff --git a/g3doc/user_guide/quick_start/oci.md b/g3doc/user_guide/quick_start/oci.md
index 877169145..e7768946b 100644
--- a/g3doc/user_guide/quick_start/oci.md
+++ b/g3doc/user_guide/quick_start/oci.md
@@ -15,8 +15,8 @@ mkdir bundle
 cd bundle
 ```
 
-Create a root file system for the container. We will use the Docker hello-world
-image as the basis for our container.
+Create a root file system for the container. We will use the Docker
+`hello-world` image as the basis for our container.
 
 ```bash
 mkdir rootfs
@@ -24,12 +24,10 @@ docker export $(docker create hello-world) | tar -xf - -C rootfs
 ```
 
 Next, create an specification file called `config.json` that contains our
-container specification. We will update the default command it runs to `/hello`
-in the `hello-world` container.
+container specification. We tell the container to run the `/hello` program.
 
 ```bash
-runsc spec
-sed -i 's;"sh";"/hello";' config.json
+runsc spec -- /hello
 ```
 
 Finally run the container.
diff --git a/g3doc/user_guide/tutorials/cni.md b/g3doc/user_guide/tutorials/cni.md
index ad6c9fa59..ce2fd09a8 100644
--- a/g3doc/user_guide/tutorials/cni.md
+++ b/g3doc/user_guide/tutorials/cni.md
@@ -128,12 +128,14 @@ sudo mkdir -p rootfs/var/www/html
 sudo sh -c 'echo "Hello World!" > rootfs/var/www/html/index.html'
 ```
 
-Next create the `config.json` specifying the network namespace. `sudo
-/usr/local/bin/runsc spec sudo sed -i 's;"sh";"python", "-m", "http.server";'
-config.json sudo sed -i "s;\"cwd\": \"/\";\"cwd\": \"/var/www/html\";"
-config.json sudo sed -i "s;\"type\": \"network\";\"type\":
-\"network\",\n\t\t\t\t\"path\": \"/var/run/netns/${CNI_CONTAINERID}\";"
-config.json`
+Next create the `config.json` specifying the network namespace.
+
+```
+sudo /usr/local/bin/runsc spec \
+    --cwd /var/www/html \
+    --netns /var/run/netns/${CNI_CONTAINERID} \
+    -- python -m http.server
+```
 
 ## Run the Container
 
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