Build docker busybox image locally

Change-Id: I521962daca113202b52221cb53d93c0cad8f2d6f
Closes-bug: #1633435

contrib/busybox/Dockerfile

@@ -0,0 +1,3 @@
+FROM scratch
+ADD busybox.tar.xz /
+CMD ["sh"]

contrib/busybox/build_image.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+tar cv --files-from /dev/null | docker import - scratch
+
+sudo docker build -t kuryr/busybox .

devstack/plugin.sh

@@ -155,6 +155,11 @@ if is_service_enabled kuryr-libnetwork; then
         done
         echo ""
         sudo chown "$STACK_USER":docker "$KURYR_DOCKER_ENGINE_SOCKET_FILE"
+
+        echo "Build busybox docker image for fullstack and rally test"
+        cd $DEST/kuryr-libnetwork/contrib/busybox
+        sudo usermod -aG docker $STACK_USER
+        sh build_image.sh
     fi
 
     if [[ "$1" == "stack" && "$2" == "extra" ]]; then

kuryr_libnetwork/tests/fullstack/test_container.py

@@ -22,7 +22,6 @@ class ContainerTest(kuryr_base.KuryrBaseTest):
     """
     def setUp(self):
         super(ContainerTest, self).setUp()
-        self.docker_client.pull(repository='busybox', tag='1')
 
         fake_ipam = {
             "Driver": "kuryr",
@@ -62,7 +61,7 @@ class ContainerTest(kuryr_base.KuryrBaseTest):
         # Test if support connect/disconnect operations
         container_name = lib_utils.get_random_string(8)
         container = self.docker_client.create_container(
-            image='busybox:1',
+            image='kuryr/busybox',
             command='/bin/sleep 600',
             hostname='kuryr_test_container',
             name=container_name)

rally-jobs/plugins/context/docker_networks.py

@@ -53,8 +53,6 @@ class DockerNetworkContext(context.Context):
         """Create kuryr or non-kuryr docker network, and prepare image cache"""
         try:
             docker_client = docker.Client(base_url="tcp://0.0.0.0:2375")
-            # Cache busybox image
-            docker_client.pull(repository="busybox", tag="1")
 
             if self.config["is_kuryr"]:
                 ipam = {

rally-jobs/plugins/scenarios/utils.py

@@ -80,7 +80,7 @@ class KuryrScenario(scenario.OpenStackScenario):
     def _start_container(self, container_create_args=None):
         """Start Container on docker network."""
         container = self.docker_client.create_container(
-            image='busybox:1',
+            image='kuryr/busybox',
             command='/bin/sleep 600')
         container_id = container.get('Id')
         self.docker_client.start(container=container_id)