// Docker daemon won't let you set a limit less than ~10 MiB
const minDockerRAM = int64(16 * 1024 * 1024)
+// DockerAPIVersion is the API version we use to communicate with the
+// docker service. The oldest OS we support is Ubuntu 18.04 (bionic)
+// which originally shipped docker 1.17.12 / API 1.35 so there is no
+// reason to use an older API version. See
+// https://dev.arvados.org/issues/15370#note-38 and
+// https://docs.docker.com/engine/api/.
+const DockerAPIVersion = "1.35"
+
type dockerExecutor struct {
containerUUID string
logf func(string, ...interface{})
func newDockerExecutor(containerUUID string, logf func(string, ...interface{}), watchdogInterval time.Duration) (*dockerExecutor, error) {
// API version 1.21 corresponds to Docker 1.9, which is
// currently the minimum version we want to support.
- client, err := dockerclient.NewClient(dockerclient.DefaultDockerHost, "1.21", nil, nil)
+ client, err := dockerclient.NewClient(dockerclient.DefaultDockerHost, DockerAPIVersion, nil, nil)
if watchdogInterval < 1 {
watchdogInterval = time.Minute
}