support for defining docker network opts

engine/compiler/compiler.go

@@ -73,6 +73,10 @@ type Compiler struct {
 	// attached to each pipeline container.
 	Networks []string
 
+	// NetworkOpts provides a set of network options that
+	// are used when creating the docker network.
+	NetworkOpts map[string]string
+
 	// Volumes provides a set of volumes that should be
 	// mounted to each pipeline container.
 	Volumes map[string]string
@@ -154,8 +158,9 @@ func (c *Compiler) Compile(ctx context.Context, args runtime.CompilerArgs) runti
 
 	spec := &engine.Spec{
 		Network: engine.Network{
-			ID:     random(),
-			Labels: labels,
+			ID:      random(),
+			Labels:  labels,
+			Options: c.NetworkOpts,
 		},
 		Platform: engine.Platform{
 			OS:      pipeline.Platform.OS,

engine/engine.go

@@ -83,8 +83,9 @@ func (e *Docker) Setup(ctx context.Context, specv runtime.Spec) error {
 		driver = "nat"
 	}
 	_, err := e.client.NetworkCreate(ctx, spec.Network.ID, types.NetworkCreate{
-		Driver: driver,
-		Labels: spec.Network.Labels,
+		Driver:  driver,
+		Options: spec.Network.Options,
+		Labels:  spec.Network.Labels,
 	})
 
 	return errors.TrimExtraInfo(err)

engine/spec.go

@@ -117,8 +117,9 @@ type (
 
 	// Network that is created and attached to containers
 	Network struct {
-		ID     string            `json:"id,omitempty"`
-		Labels map[string]string `json:"labels,omitempty"`
+		ID      string            `json:"id,omitempty"`
+		Labels  map[string]string `json:"labels,omitempty"`
+		Options map[string]string `json:"options,omitempty"`
 	}
 
 	// Auth defines dockerhub authentication credentials.