// SetDefaultNetModeIfBlank changes the NetworkMode in a HostConfig structure
// to default if it is not populated. This ensures backwards compatibility after
// the validation of the network mode was moved from the docker CLI to the
// docker daemon.
func SetDefaultNetModeIfBlank(hc *container.HostConfig) *container.HostConfig {
if hc != nil {
if hc.NetworkMode == container.NetworkMode("") {
hc.NetworkMode = container.NetworkMode("default")
}
}
return hc
}
func addNetNs(config *containertypes.HostConfig, service project.Service, containers []project.Container, networkMode string) (*containertypes.HostConfig, error) {
if len(containers) == 0 {
return nil, fmt.Errorf("Failed to find container for networks ns %v", networkMode)
}
id, err := containers[0].ID()
if err != nil {
return nil, err
}
config.NetworkMode = containertypes.NetworkMode("container:" + id)
return config, nil
}
// createContainer creates a new container using the specified
// options. Per the docker API, the created container is not running
// and must be started explicitly. Note that the passed-in hostConfig
// will be augmented with the necessary settings to use the network
// defined by l.createNetwork().
func createContainer(
l *LocalCluster,
containerConfig container.Config,
hostConfig container.HostConfig,
containerName string,
) (*Container, error) {
hostConfig.NetworkMode = container.NetworkMode(l.networkID)
// Disable DNS search under the host machine's domain. This can
// catch upstream wildcard DNS matching and result in odd behavior.
hostConfig.DNSSearch = []string{"."}
resp, err := l.client.ContainerCreate(context.Background(), &containerConfig, &hostConfig, nil, containerName)
if err != nil {
return nil, err
}
return &Container{
id: resp.ID,
name: containerName,
cluster: l,
}, nil
}
