Add ability to configure auth redirect url per playground

handlers/login.go

@@ -73,6 +73,9 @@ func Login(rw http.ResponseWriter, req *http.Request) {
 		return
 	}
 
+	if playground.AuthRedirectURL != "" {
+		provider.RedirectURL = playground.AuthRedirectURL
+	} else {
 		scheme := "http"
 		if req.TLS != nil {
 			scheme = "https"
@@ -82,6 +85,8 @@ func Login(rw http.ResponseWriter, req *http.Request) {
 			host = req.Host
 		}
 		provider.RedirectURL = fmt.Sprintf("%s://%s/oauth/providers/%s/callback", scheme, host, providerName)
+	}
+
 	url := provider.AuthCodeURL(loginRequest.Id, oauth2.SetAuthURLParam("nonce", uuid.NewV4().String()))
 
 	http.Redirect(rw, req, url, http.StatusFound)

pwd/types/playground.go

@@ -88,6 +88,7 @@ type Playground struct {
 	GoogleClientSecret          string           `json:"google_client_secret" bson:"google_client_secret"`
 	DockerClientID              string           `json:"docker_client_id" bson:"docker_client_id"`
 	DockerClientSecret          string           `json:"docker_client_secret" bson:"docker_client_secret"`
+	AuthRedirectURL             string           `json:"auth_redirect_url" bson:"auth_redirect_url"`
 	DockerHost                  string           `json:"docker_host" bson:"docker_host"`
 	MaxInstances                int              `json:"max_instances" bson:"max_instances"`
 	Privileged                  bool             `json:"privileged" bson:"privileged"`