feat(gitlab): add optional internal URL for GitLab integration

- Introduced a new field `gitlabInternalUrl` in the GitLab provider settings to allow users to specify an internal URL for OAuth token exchange when GitLab runs on the same instance as Dokploy.
- Updated the GitLab provider forms to include the new field with appropriate descriptions.
- Modified the token exchange logic to utilize the internal URL if provided, enhancing connectivity options for users.

packages/server/src/db/schema/gitlab.ts

@@ -11,6 +11,7 @@ export const gitlab = pgTable("gitlab", {
 		.primaryKey()
 		.$defaultFn(() => nanoid()),
 	gitlabUrl: text("gitlabUrl").default("https://gitlab.com").notNull(),
+	gitlabInternalUrl: text("gitlabInternalUrl"),
 	applicationId: text("application_id"),
 	redirectUri: text("redirect_uri"),
 	secret: text("secret"),
@@ -41,6 +42,7 @@ export const apiCreateGitlab = createSchema.extend({
 	authId: z.string().min(1),
 	name: z.string().min(1),
 	gitlabUrl: z.string().min(1),
+	gitlabInternalUrl: z.string().optional().nullable(),
 });
 
 export const apiFindOneGitlab = createSchema
@@ -70,4 +72,5 @@ export const apiUpdateGitlab = createSchema.extend({
 	name: z.string().min(1),
 	gitlabId: z.string().min(1),
 	gitlabUrl: z.string().min(1),
+	gitlabInternalUrl: z.string().optional().nullable(),
 });

packages/server/src/db/schema/schema.dbml

@@ -497,6 +497,7 @@ table github {
 table gitlab {
   gitlabId text [pk, not null]
   gitlabUrl text [not null, default: 'https://gitlab.com']
+  gitlabInternalUrl text
   application_id text
   redirect_uri text
   secret text

packages/server/src/utils/providers/gitlab.ts

@@ -21,7 +21,9 @@ export const refreshGitlabToken = async (gitlabProviderId: string) => {
 		return;
 	}
 
-	const response = await fetch(`${gitlabProvider.gitlabUrl}/oauth/token`, {
+	// Use internal URL for token refresh when GitLab is on same instance as Dokploy
+	const baseUrl = gitlabProvider.gitlabInternalUrl || gitlabProvider.gitlabUrl;
+	const response = await fetch(`${baseUrl}/oauth/token`, {
 		method: "POST",
 		headers: {
 			"Content-Type": "application/x-www-form-urlencoded",