feat(infra): add external redis (#3639)

e2e/health-checks.spec.ts

@@ -1,9 +1,10 @@
 import { describe, expect, test } from "vitest";
 
 import { createHomarrContainer } from "./shared/create-homarr-container";
+import { createRedisContainer } from "./shared/redis-container";
 
 describe("Health checks", () => {
-  test("ready and live should return 200 OK", async () => {
+  test("ready and live should return 200 OK with normal image and no extra configuration", async () => {
     // Arrange
     const homarrContainer = await createHomarrContainer().start();
 
@@ -15,4 +16,31 @@ describe("Health checks", () => {
     expect(readyResponse.status).toBe(200);
     expect(liveResponse.status).toBe(200);
   }, 20_000);
+
+  test("ready and live should return 200 OK with external redis", async () => {
+    // Arrange
+    const redisContainer = await createRedisContainer().start();
+    const homarrContainer = await createHomarrContainer({
+      environment: {
+        REDIS_IS_EXTERNAL: "true",
+        REDIS_HOST: "host.docker.internal",
+        REDIS_PORT: redisContainer.getMappedPort(6379).toString(),
+        REDIS_PASSWORD: redisContainer.getPassword(),
+      },
+    }).start();
+
+    // Act
+    const readyResponse = await fetch(`http://localhost:${homarrContainer.getMappedPort(7575)}/api/health/ready`);
+    const liveResponse = await fetch(`http://localhost:${homarrContainer.getMappedPort(7575)}/api/health/live`);
+
+    // Assert
+    expect(
+      readyResponse.status,
+      `Expected ready to return OK statusCode=${readyResponse.status} content=${await readyResponse.text()}`,
+    ).toBe(200);
+    expect(
+      liveResponse.status,
+      `Expected live to return OK statusCode=${liveResponse.status} content=${await liveResponse.text()}`,
+    ).toBe(200);
+  }, 20_000);
 });

e2e/shared/redis-container.ts

@@ -0,0 +1,5 @@
+import { RedisContainer } from "@testcontainers/redis";
+
+export const createRedisContainer = () => {
+  return new RedisContainer("redis:latest").withPassword("homarr");
+};