pull container image only once per machine

the container image is now only pulled once, before all containers are
created. this prevents hitting the container registry with thousands of
requests in a very short amount of time.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index 9f50595..8e8e5ea 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -502,8 +502,10 @@ fn machine_containers_create_script(containers: &[ScheduledContainer]) -> String
         script.push_str("mkdir -p /tmp/oar-p2p-signal\n");
         script.push_str("rm /tmp/oar-p2p-signal/start 2>/dev/null || true\n");
 
+        script.push_str(&format!("docker pull {} || exit 1\n", container.image));
+
         script.push_str("docker create \\\n");
-        script.push_str("\t--pull=always \\\n");
+        script.push_str("\t--pull=never \\\n");
         script.push_str("\t--network=host \\\n");
         script.push_str("\t--restart=no \\\n");
         script.push_str("\t--volume /tmp/oar-p2p-signal:/oar-p2p\\\n");