dockerTools.pullImage: change the docker deamon readiness mechanism

To wait for the docker deamon, curl requests are sent. However, if a http proxy is set, it will respond instead of the docker daemon. To avoid this, we send docker ps command instead of curl command. (cherry picked from commit 132e790)
NixOS · Sep 13, 2017 · 7c1278d · 7c1278d
1 parent 6076d9f
commit 7c1278d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/build-support/docker/pull.sh b/pkgs/build-support/docker/pull.sh
@@ -25,7 +25,7 @@ done
 # run docker daemon
 dockerd -H tcp://127.0.0.1:5555 -H unix:///var/run/docker.sock &
 
-until $(curl --output /dev/null --silent --connect-timeout 2 http://127.0.0.1:5555); do
+until docker ps 2>/dev/null; do
   printf '.'
   sleep 1
 done