Refactor build process and runtime setup for dynamic base path handling

frontend/.env.production

@@ -1,4 +1,4 @@
-VITE_APP_BASE_URL=/@RUNTIME_BASE_URL@/
+VITE_APP_BASE_URL=
 VITE_APP_TUITIO_URL=https://<VITE_APP_TUITIO_URL>
 VITE_APP_NETWORK_RESURRECTOR_API_URL=https://<VITE_APP_NETWORK_RESURRECTOR_API_URL>
 

frontend/.gitignore

@@ -10,6 +10,7 @@
 
 # production
 /build
+/build2
 
 # misc
 .DS_Store

frontend/dockerfile

@@ -2,6 +2,8 @@
 FROM node:23-slim AS builder
 WORKDIR /app
 
+ARG APP_SUBFOLDER=""
+
 COPY .npmrc .npmrc 
 COPY package*.json ./
 RUN npm install
@@ -10,13 +12,16 @@ RUN rm -f .npmrc
 COPY . ./
 
 # build the react app
-RUN npm run build
+RUN if [ -z "$APP_SUBFOLDER" ]; then npm run build; else VITE_APP_BASE_URL=/${APP_SUBFOLDER}/ npm run build; fi
 
 # PRODUCTION ENVIRONMENT
 FROM node:23-slim
 
+ARG APP_SUBFOLDER=""
+
 RUN printf '\n\n- Copy application files\n'
-COPY --from=builder /app/build ./application
+COPY --from=builder /app/build ./application/${APP_SUBFOLDER}
+COPY --from=builder /app/build/index.html ./application/
 COPY --from=builder /app/runtimeSetup.js ./application/runtimeSetup.js
 
 #install static server
@@ -25,6 +30,7 @@ RUN npm install -g serve
 # environment variables
 ENV AUTHOR="Tudor Stanciu"
 ENV APP_NAME="Network resurrector UI"
+ENV VITE_APP_BASE_URL=/${APP_SUBFOLDER}/
 
 ARG APP_VERSION=0.0.0
 ENV APP_VERSION=${APP_VERSION}

frontend/runtimeSetup.js

@@ -4,9 +4,7 @@ const path = require("path");
 const crypto = require("crypto");
 
 const prefix = "VITE_APP_";
-const RUNTIME_BASE_URL_PLACEHOLDER = "/@RUNTIME_BASE_URL@";
 const APP_DIR = "./application";
-const ENV_JS_DIR = APP_DIR;
 
 function generateScriptContent() {
   const prefixRegex = new RegExp(`^${prefix}`);
@@ -35,7 +33,7 @@ function updateIndexHtml(envFileName, basePath) {
   let indexContent = fs.readFileSync(indexPath, "utf8");
 
   // Replace base path placeholder with actual value
-  indexContent = indexContent.replace(new RegExp(RUNTIME_BASE_URL_PLACEHOLDER, "g"), basePath || "/");
+  // indexContent = indexContent.replace(new RegExp(RUNTIME_BASE_URL_PLACEHOLDER, "g"), basePath || "/");
 
   // Replace any existing env script with the new one
   const envScriptRegex = /<script src="[^"]*env(\.\w+)?\.js"[^>]*><\/script>/;
@@ -57,13 +55,13 @@ function updateIndexHtml(envFileName, basePath) {
   console.log(`Updated ${indexPath} with base path: ${basePath || "/"} and env script: ${scriptSrc}`);
 }
 
-function cleanupOldEnvFiles(newEnvFileName) {
+function cleanupOldEnvFiles(newEnvFileName, envJsDir) {
   // Find all env*.js files and delete them except the new one
-  const files = fs.readdirSync(ENV_JS_DIR);
+  const files = fs.readdirSync(envJsDir);
   const envFiles = files.filter(file => /^env(\.\w+)?\.js$/.test(file) && file !== newEnvFileName);
 
   for (const file of envFiles) {
-    const filePath = path.join(ENV_JS_DIR, file);
+    const filePath = path.join(envJsDir, file);
     fs.unlinkSync(filePath);
     console.log(`Removed old env file: ${filePath}`);
   }
@@ -71,6 +69,7 @@ function cleanupOldEnvFiles(newEnvFileName) {
 
 function main() {
   console.log("Setting environment variables...");
+  const basePath = process.env.VITE_APP_BASE_URL || "/";
 
   // Generate env script content
   const scriptContent = generateScriptContent();
@@ -78,8 +77,9 @@ function main() {
   // Compute hash for cache busting
   const hash = getSha256Hash(scriptContent);
   const fragment = hash.substring(0, 8);
+  const envJsDir = path.join(APP_DIR, basePath);
   const envFileName = `env.${fragment}.js`;
-  const envFilePath = path.join(ENV_JS_DIR, envFileName);
+  const envFilePath = path.join(envJsDir, envFileName);
 
   // Ensure build directory exists
   if (!fs.existsSync(APP_DIR)) {
@@ -92,10 +92,9 @@ function main() {
   console.log(`Updated ${envFilePath} with ${prefix}* environment variables`);
 
   // Clean up old env.js files
-  cleanupOldEnvFiles(envFileName);
+  cleanupOldEnvFiles(envFileName, envJsDir);
 
   // Get base path from environment and update index.html
-  const basePath = process.env.VITE_APP_BASE_URL || "/";
   updateIndexHtml(envFileName, basePath);
 }