feat: 移除仓库内 nginx 并拆分前端运行时

frontend/.env.example

@@ -1,4 +1,5 @@
 # Frontend feature flags and timeline overrides
+VITE_API_BASE_URL=
 VITE_STARTUP_SUBMIT_ACCEPT_TIMEOUT_MONTHS=3
 VITE_STARTUP_ACCEPT_TIMEOUT_MONTHS=3
 VITE_STARTUP_ACCEPT_APPROVAL_TIMEOUT_MONTHS=6

frontend/Caddyfile

@@ -0,0 +1,5 @@
+:4173
+
+root * /srv
+try_files {path} /index.html
+file_server

frontend/Dockerfile

@@ -2,14 +2,18 @@ FROM node:20-alpine AS build
 
 WORKDIR /app
 
+ARG VITE_API_BASE_URL
+ENV VITE_API_BASE_URL=${VITE_API_BASE_URL}
+
 COPY package*.json ./
 RUN npm ci
 
 COPY . .
 RUN npm run build
 
-FROM alpine:3.21
+FROM caddy:2-alpine
 
-WORKDIR /opt/frontend
+COPY Caddyfile /etc/caddy/Caddyfile
+COPY --from=build /app/dist /srv
 
-COPY --from=build /app/dist ./dist
+EXPOSE 4173

frontend/src/api/axios.ts

@@ -7,9 +7,12 @@ import { useStudyStore } from "../store/study";
 import { TEXT } from "../locales";
 import { extendAccessToken, forceLogout, lockSession, markNetworkActive } from "../session/sessionManager";
 import { useSessionStore } from "../store/session";
+import { resolveApiBaseUrl } from "./baseUrl";
+
+const apiBaseUrl = resolveApiBaseUrl(import.meta.env.VITE_API_BASE_URL);
 
 const instance: AxiosInstance = axios.create({
-  baseURL: "/",
+  baseURL: apiBaseUrl,
   timeout: 15000,
 });
 

frontend/src/api/baseUrl.test.ts

@@ -0,0 +1,19 @@
+import { describe, expect, it } from "vitest";
+import { resolveApiBaseUrl } from "./baseUrl";
+
+describe("resolveApiBaseUrl", () => {
+  it("defaults to same-origin root when no env override is set", () => {
+    expect(resolveApiBaseUrl(undefined)).toBe("/");
+    expect(resolveApiBaseUrl("")).toBe("/");
+    expect(resolveApiBaseUrl("   ")).toBe("/");
+  });
+
+  it("preserves explicit root", () => {
+    expect(resolveApiBaseUrl("/")).toBe("/");
+  });
+
+  it("trims whitespace and trailing slashes from absolute base urls", () => {
+    expect(resolveApiBaseUrl(" http://localhost:8000/ ")).toBe("http://localhost:8000");
+    expect(resolveApiBaseUrl("https://api.example.com///")).toBe("https://api.example.com");
+  });
+});

frontend/src/api/baseUrl.ts

@@ -0,0 +1,12 @@
+const trimTrailingSlashes = (value: string): string => value.replace(/\/+$/, "");
+
+export const resolveApiBaseUrl = (rawValue: string | undefined): string => {
+  const normalized = rawValue?.trim() ?? "";
+  if (!normalized) {
+    return "/";
+  }
+  if (normalized === "/") {
+    return "/";
+  }
+  return trimTrailingSlashes(normalized);
+};