Re-enable docker pull, to allow refreshing snapshot images

Author: swallez

.buildkite/run-elasticsearch.sh

@@ -84,14 +84,14 @@ fi
 
 # Pull the container, retry on failures up to 5 times with
 # short delays between each attempt. Fixes most transient network errors.
-#docker_pull_attempts=0
-#until [ "$docker_pull_attempts" -ge 5 ]
-#do
-#   docker pull docker.elastic.co/elasticsearch/"$elasticsearch_container" && break
-#   docker_pull_attempts=$((docker_pull_attempts+1))
-#   echo "Failed to pull image, retrying in 10 seconds (retry $docker_pull_attempts/5)..."
-#   sleep 10
-#done
+docker_pull_attempts=0
+until [ "$docker_pull_attempts" -ge 5 ]
+do
+   docker pull docker.elastic.co/elasticsearch/"$elasticsearch_container" && break
+   docker_pull_attempts=$((docker_pull_attempts+1))
+   echo "Failed to pull image, retrying in 10 seconds (retry $docker_pull_attempts/5)..."
+   sleep 10
+done
 
 NUMBER_OF_NODES=${NUMBER_OF_NODES-1}
 http_port=9200