diff --git a/handlers/new_session.go b/handlers/new_session.go
index a6ae265..cdae21d 100644
--- a/handlers/new_session.go
+++ b/handlers/new_session.go
@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"log"
@@ -11,6 +12,7 @@ import (
 
 	"github.com/play-with-docker/play-with-docker/config"
 	"github.com/play-with-docker/play-with-docker/provisioner"
+	"github.com/play-with-docker/play-with-docker/pwd/types"
 )
 
 type NewSessionResponse struct {
@@ -75,7 +77,8 @@ func NewSession(rw http.ResponseWriter, req *http.Request) {
 		duration = playground.DefaultSessionDuration
 	}
 
-	s, err := core.SessionNew(playground, userId, duration, stack, stackName, imageName)
+	sConfig := types.SessionConfig{Playground: playground, UserId: userId, Duration: duration, Stack: stack, StackName: stackName, ImageName: imageName}
+	s, err := core.SessionNew(context.Background(), sConfig)
 	if err != nil {
 		if provisioner.OutOfCapacity(err) {
 			http.Redirect(rw, req, "/ooc", http.StatusFound)
diff --git a/provisioner/overlay.go b/provisioner/overlay.go
index e8b3e93..9f08065 100644
--- a/provisioner/overlay.go
+++ b/provisioner/overlay.go
@@ -1,6 +1,7 @@
 package provisioner
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"net/url"
@@ -20,7 +21,7 @@ func NewOverlaySessionProvisioner(df docker.FactoryApi) SessionProvisionerApi {
 	return &overlaySessionProvisioner{dockerFactory: df}
 }
 
-func (p *overlaySessionProvisioner) SessionNew(playground *types.Playground, s *types.Session) error {
+func (p *overlaySessionProvisioner) SessionNew(ctx context.Context, s *types.Session) error {
 	dockerClient, err := p.dockerFactory.GetForSession(s)
 	if err != nil {
 		// We assume we are out of capacity
diff --git a/provisioner/provisioner.go b/provisioner/provisioner.go
index b4af881..8167c2f 100644
--- a/provisioner/provisioner.go
+++ b/provisioner/provisioner.go
@@ -1,6 +1,7 @@
 package provisioner
 
 import (
+	"context"
 	"errors"
 	"io"
 	"net"
@@ -27,7 +28,7 @@ type InstanceProvisionerApi interface {
 }
 
 type SessionProvisionerApi interface {
-	SessionNew(playground *types.Playground, session *types.Session) error
+	SessionNew(ctx context.Context, session *types.Session) error
 	SessionClose(session *types.Session) error
 }
 
diff --git a/pwd/client_test.go b/pwd/client_test.go
index e7984bd..1ba5487 100644
--- a/pwd/client_test.go
+++ b/pwd/client_test.go
@@ -1,6 +1,7 @@
 package pwd
 
 import (
+	"context"
 	"testing"
 	"time"
 
@@ -45,7 +46,8 @@ func TestClientNew(t *testing.T) {
 
 	playground := &types.Playground{Id: "foobar"}
 
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, err)
 
 	client := p.ClientNew("foobar", session)
@@ -85,7 +87,8 @@ func TestClientCount(t *testing.T) {
 	p.generator = _g
 	playground := &types.Playground{Id: "foobar"}
 
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, err)
 
 	p.ClientNew("foobar", session)
@@ -127,7 +130,8 @@ func TestClientResizeViewPort(t *testing.T) {
 	p.generator = _g
 	playground := &types.Playground{Id: "foobar"}
 
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, err)
 	client := p.ClientNew("foobar", session)
 	_s.On("ClientFindBySessionId", "aaaabbbbcccc").Return([]*types.Client{client}, nil)
diff --git a/pwd/instance_test.go b/pwd/instance_test.go
index cdd38e5..acd0c2d 100644
--- a/pwd/instance_test.go
+++ b/pwd/instance_test.go
@@ -1,6 +1,7 @@
 package pwd
 
 import (
+	"context"
 	"fmt"
 	"testing"
 	"time"
@@ -74,7 +75,8 @@ func TestInstanceNew(t *testing.T) {
 
 	_s.On("PlaygroundGet", "foobar").Return(playground, nil)
 
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, err)
 
 	expectedInstance := types.Instance{
@@ -143,7 +145,8 @@ func TestInstanceNew_WithNotAllowedImage(t *testing.T) {
 	p.generator = _g
 
 	playground := &types.Playground{Id: "foobar"}
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 
 	assert.Nil(t, err)
 
@@ -213,7 +216,8 @@ func TestInstanceNew_WithCustomHostname(t *testing.T) {
 	p.generator = _g
 
 	playground := &types.Playground{Id: "foobar"}
-	session, err := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	session, err := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, err)
 
 	expectedInstance := types.Instance{
diff --git a/pwd/mock.go b/pwd/mock.go
index 53b6a88..22539f9 100644
--- a/pwd/mock.go
+++ b/pwd/mock.go
@@ -1,9 +1,9 @@
 package pwd
 
 import (
+	"context"
 	"io"
 	"net"
-	"time"
 
 	"github.com/play-with-docker/play-with-docker/pwd/types"
 	"github.com/stretchr/testify/mock"
@@ -13,8 +13,8 @@ type Mock struct {
 	mock.Mock
 }
 
-func (m *Mock) SessionNew(playground *types.Playground, userId string, duration time.Duration, stack string, stackName, imageName string) (*types.Session, error) {
-	args := m.Called(duration, stack, stackName, imageName)
+func (m *Mock) SessionNew(ctx context.Context, config types.SessionConfig) (*types.Session, error) {
+	args := m.Called(ctx, config)
 	return args.Get(0).(*types.Session), args.Error(1)
 }
 
diff --git a/pwd/pwd.go b/pwd/pwd.go
index 558c79b..ddf678a 100644
--- a/pwd/pwd.go
+++ b/pwd/pwd.go
@@ -1,6 +1,7 @@
 package pwd
 
 import (
+	"context"
 	"errors"
 	"io"
 	"net"
@@ -72,7 +73,7 @@ func SessionNotEmpty(e error) bool {
 }
 
 type PWDApi interface {
-	SessionNew(playground *types.Playground, userId string, duration time.Duration, stack string, stackName, imageName string) (*types.Session, error)
+	SessionNew(ctx context.Context, config types.SessionConfig) (*types.Session, error)
 	SessionClose(session *types.Session) error
 	SessionGetSmallestViewPort(sessionId string) types.ViewPort
 	SessionDeployStack(session *types.Session) error
diff --git a/pwd/session.go b/pwd/session.go
index 688b41f..228e54a 100644
--- a/pwd/session.go
+++ b/pwd/session.go
@@ -44,29 +44,30 @@ type SessionSetupInstanceConf struct {
 	Tls            bool       `json:"tls"`
 }
 
-func (p *pwd) SessionNew(playground *types.Playground, userId string, duration time.Duration, stack, stackName, imageName string) (*types.Session, error) {
+func (p *pwd) SessionNew(ctx context.Context, config types.SessionConfig) (*types.Session, error) {
 	defer observeAction("SessionNew", time.Now())
 
 	s := &types.Session{}
 	s.Id = p.generator.NewId()
 	s.CreatedAt = time.Now()
-	s.ExpiresAt = s.CreatedAt.Add(duration)
+	s.ExpiresAt = s.CreatedAt.Add(config.Duration)
 	s.Ready = true
-	s.Stack = stack
-	s.UserId = userId
-	s.PlaygroundId = playground.Id
+	s.Stack = config.Stack
+	s.UserId = config.UserId
+	s.PlaygroundId = config.Playground.Id
 
 	if s.Stack != "" {
 		s.Ready = false
 	}
+	stackName := config.StackName
 	if stackName == "" {
 		stackName = "pwd"
 	}
 	s.StackName = stackName
-	s.ImageName = imageName
+	s.ImageName = config.ImageName
 
 	log.Printf("NewSession id=[%s]\n", s.Id)
-	if err := p.sessionProvisioner.SessionNew(playground, s); err != nil {
+	if err := p.sessionProvisioner.SessionNew(ctx, s); err != nil {
 		log.Println(err)
 		return nil, err
 	}
diff --git a/pwd/session_test.go b/pwd/session_test.go
index 7a2d2c2..1d68de6 100644
--- a/pwd/session_test.go
+++ b/pwd/session_test.go
@@ -1,6 +1,7 @@
 package pwd
 
 import (
+	"context"
 	"testing"
 	"time"
 
@@ -47,7 +48,8 @@ func TestSessionNew(t *testing.T) {
 	before := time.Now()
 
 	playground := &types.Playground{Id: "foobar"}
-	s, e := p.SessionNew(playground, "", time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	s, e := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, e)
 	assert.NotNil(t, s)
 
@@ -58,7 +60,8 @@ func TestSessionNew(t *testing.T) {
 	assert.WithinDuration(t, s.ExpiresAt, before.Add(time.Hour), time.Second)
 	assert.True(t, s.Ready)
 
-	s, _ = p.SessionNew(playground, "", time.Hour, "stackPath", "stackName", "imageName")
+	sConfig = types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "stackPath", StackName: "stackName", ImageName: "imageName"}
+	s, _ = p.SessionNew(context.Background(), sConfig)
 
 	assert.Equal(t, "stackPath", s.Stack)
 	assert.Equal(t, "stackName", s.StackName)
@@ -133,7 +136,8 @@ func TestSessionSetup(t *testing.T) {
 
 	p := NewPWD(_f, _e, _s, sp, ipf)
 	p.generator = _g
-	s, e := p.SessionNew(time.Hour, "", "", "")
+	sConfig := types.SessionConfig{Playground: playground, UserId: "", Duration: time.Hour, Stack: "", StackName: "", ImageName: ""}
+	s, e := p.SessionNew(context.Background(), sConfig)
 	assert.Nil(t, e)
 
 	err := p.SessionSetup(s, SessionSetupConf{
diff --git a/pwd/types/session.go b/pwd/types/session.go
index 67ce933..9816718 100644
--- a/pwd/types/session.go
+++ b/pwd/types/session.go
@@ -4,6 +4,15 @@ import (
 	"time"
 )
 
+type SessionConfig struct {
+	Playground *Playground
+	UserId     string
+	Duration   time.Duration
+	Stack      string
+	StackName  string
+	ImageName  string
+}
+
 type Session struct {
 	Id           string    `json:"id" bson:"id"`
 	CreatedAt    time.Time `json:"created_at" bson:"created_at"`