core: add ulimits configuration for Docker Swarm deployments

Users deploying to Docker Swarm can now configure resource ulimits
(nofile, nproc, etc.) to prevent applications from hitting system
limits that cause crashes or degraded performance.

apps/dokploy/__test__/drop/drop.test.ts

@@ -146,6 +146,7 @@ const baseApp: ApplicationNested = {
 	dockerContextPath: null,
 	rollbackActive: false,
 	stopGracePeriodSwarm: null,
+	ulimitsSwarm: null,
 };
 
 describe("unzipDrop using real zip files", () => {

apps/dokploy/__test__/server/mechanizeDockerContainer.test.ts

@@ -6,6 +6,7 @@ type MockCreateServiceOptions = {
 	TaskTemplate?: {
 		ContainerSpec?: {
 			StopGracePeriod?: number;
+			Ulimits?: Array<{ Name: string; Soft: number; Hard: number }>;
 		};
 	};
 	[key: string]: unknown;
@@ -57,6 +58,7 @@ const createApplication = (
 		},
 		replicas: 1,
 		stopGracePeriodSwarm: 0n,
+		ulimitsSwarm: null,
 		serverId: "server-id",
 		...overrides,
 	}) as unknown as ApplicationNested;
@@ -106,4 +108,50 @@ describe("mechanizeDockerContainer", () => {
 			"StopGracePeriod",
 		);
 	});
+
+	it("passes ulimits to ContainerSpec when ulimitsSwarm is defined", async () => {
+		const ulimits = [
+			{ Name: "nofile", Soft: 10000, Hard: 20000 },
+			{ Name: "nproc", Soft: 4096, Hard: 8192 },
+		];
+		const application = createApplication({ ulimitsSwarm: ulimits });
+
+		await mechanizeDockerContainer(application);
+
+		expect(createServiceMock).toHaveBeenCalledTimes(1);
+		const call = createServiceMock.mock.calls[0];
+		if (!call) {
+			throw new Error("createServiceMock should have been called once");
+		}
+		const [settings] = call;
+		expect(settings.TaskTemplate?.ContainerSpec?.Ulimits).toEqual(ulimits);
+	});
+
+	it("omits Ulimits when ulimitsSwarm is null", async () => {
+		const application = createApplication({ ulimitsSwarm: null });
+
+		await mechanizeDockerContainer(application);
+
+		expect(createServiceMock).toHaveBeenCalledTimes(1);
+		const call = createServiceMock.mock.calls[0];
+		if (!call) {
+			throw new Error("createServiceMock should have been called once");
+		}
+		const [settings] = call;
+		expect(settings.TaskTemplate?.ContainerSpec).not.toHaveProperty("Ulimits");
+	});
+
+	it("omits Ulimits when ulimitsSwarm is an empty array", async () => {
+		const application = createApplication({ ulimitsSwarm: [] });
+
+		await mechanizeDockerContainer(application);
+
+		expect(createServiceMock).toHaveBeenCalledTimes(1);
+		const call = createServiceMock.mock.calls[0];
+		if (!call) {
+			throw new Error("createServiceMock should have been called once");
+		}
+		const [settings] = call;
+		expect(settings.TaskTemplate?.ContainerSpec).not.toHaveProperty("Ulimits");
+	});
 });

apps/dokploy/__test__/traefik/traefik.test.ts

@@ -124,6 +124,7 @@ const baseApp: ApplicationNested = {
 	username: null,
 	dockerContextPath: null,
 	stopGracePeriodSwarm: null,
+	ulimitsSwarm: null,
 };
 
 const baseDomain: Domain = {