Fixed class name and routing file paths

Author: joppe-s

backend/pom.xml

@@ -2,7 +2,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>com.example</groupId>
+    <groupId>com.codesignal</groupId>
     <artifactId>pastebin</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>pastebin</name>

backend/src/main/java/com/codesignal/pastebin/controller/FrontendController.java

@@ -14,17 +14,32 @@
 @RestController
 public class FrontendController {
     private File resolveIndexHtml() {
+        // When running from repo root
         File local = new File("frontend/dist/index.html");
         if (local.exists()) return local;
+
+        // When running from backend directory
+        File sibling = new File("../frontend/dist/index.html");
+        if (sibling.exists()) return sibling;
+
+        // When running in Docker image
         File container = new File("/app/frontend/dist/index.html");
         if (container.exists()) return container;
         return null;
     }
     private File resolveStatic(String relPath) {
         if (relPath == null || relPath.isBlank()) return null;
         if (relPath.startsWith("/")) relPath = relPath.substring(1);
+
+        // When running from repo root
         File local = new File("frontend/dist/" + relPath);
         if (local.exists() && local.isFile()) return local;
+
+        // When running from backend directory
+        File sibling = new File("../frontend/dist/" + relPath);
+        if (sibling.exists() && sibling.isFile()) return sibling;
+
+        // When running in Docker image
         File container = new File("/app/frontend/dist/" + relPath);
         if (container.exists() && container.isFile()) return container;
         return null;