Mute false alarm when installing docker
In install_docker.sh, we will restart docker service, then connect
to /var/run/docker.sock with retry mechanism.
At the first contacting with /var/run/docker.sock, when docker
service is not ready, it may complain some error.
Mute this false alarm.
Change-Id: If00a18d2e3ddee951662e272d47ae84215f16ad2
Closes-Bug: #1252087
diff --git a/tools/docker/install_docker.sh b/tools/docker/install_docker.sh
index 2e5b510..375cfe9 100755
--- a/tools/docker/install_docker.sh
+++ b/tools/docker/install_docker.sh
@@ -45,7 +45,7 @@
echo "Waiting for docker daemon to start..."
DOCKER_GROUP=$(groups | cut -d' ' -f1)
-CONFIGURE_CMD="while ! /bin/echo -e 'GET /v1.3/version HTTP/1.0\n\n' | socat - unix-connect:$DOCKER_UNIX_SOCKET | grep -q '200 OK'; do
+CONFIGURE_CMD="while ! /bin/echo -e 'GET /v1.3/version HTTP/1.0\n\n' | socat - unix-connect:$DOCKER_UNIX_SOCKET 2>/dev/null | grep -q '200 OK'; do
# Set the right group on docker unix socket before retrying
sudo chgrp $DOCKER_GROUP $DOCKER_UNIX_SOCKET
sudo chmod g+rw $DOCKER_UNIX_SOCKET