finally it seems to work

Dockerfile

@@ -0,0 +1,29 @@
+FROM node:20-bullseye as client
+
+WORKDIR /usr/src/app/client
+COPY ./client/package*.json ./
+RUN npm i
+COPY ./client/. .
+RUN npm run build
+
+FROM azul/prime:17 as server
+
+WORKDIR /usr/src/app/server
+COPY ./server/. .
+RUN ./gradlew clean build && bash -c "rm build/libs/*-plain.jar && mv build/libs/*.jar server.jar"
+
+
+FROM azul/prime:17
+
+WORKDIR /usr/src/app
+COPY --from=server /usr/src/app/server/server.jar .
+RUN mkdir -p client/dist
+COPY --from=client /usr/src/app/client/dist ./client/dist
+
+ENV spring_profiles_active=prod
+
+COPY ./dockerentry.sh .
+
+RUN ["chmod", "+x", "./dockerentry.sh"]
+
+CMD [ "./dockerentry.sh" ]

client/.dockerignore

@@ -0,0 +1,3 @@
+.parcel-cache
+dist
+node_modules

client/package.json

@@ -5,10 +5,9 @@
   "author": "Stepan Usatiuk",
   "source": "src/index.html",
   "scripts": {
-    "start": "parcel",
+    "start": "parcel --public-url /app",
-    "build": "parcel build"
+    "build": "parcel build --public-url /app"
   },
-  "publicUrl": "/app",
   "browserslist": "> 0.5%, last 2 versions, not dead",
   "dependencies": {
     "jwt-decode": "^4.0.0",

client/src/api/utils.ts

@@ -10,7 +10,7 @@ declare const process: {
 };
 
 const apiRoot: string =
-    process.env.NODE_ENV == "production" ? "/" : "http://localhost:8080";
+    process.env.NODE_ENV == "production" ? "" : "http://localhost:8080";
 
 let token: string | null;
 

docker-compose.example.yml

@@ -0,0 +1,37 @@
+version: "3.8"
+services:
+  yapp:
+    build: ./
+    restart: unless-stopped
+    ports:
+      - "8080:8080"
+    environment:
+      - jwt_secret=secretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecret
+      - spring_datasource_url=jdbc:mariadb://db:3306/yapp
+      - spring_datasource_username=yapp
+      - spring_datasource_password=yappyapp
+    depends_on:
+      db:
+        condition: service_healthy       
+  db:
+    image: mariadb
+    restart: unless-stopped
+    environment:
+      - MYSQL_RANDOM_ROOT_PASSWORD=true
+      - MYSQL_USER=yapp 
+      - MYSQL_PASSWORD=yappyapp
+      - MYSQL_DATABASE=yapp
+      - MYSQL_CHARSET=utf8mb4
+      - MYSQL_COLLATION=utf8mb4_general_ci
+    volumes:
+      - ymariadb:/var/lib/mysql
+    healthcheck:
+      test: [ "CMD", "healthcheck.sh", "--connect", "--innodb_initialized" ]
+      start_period: 30s
+      start_interval: 10s
+      interval: 5s
+      timeout: 5s
+      retries: 3
+
+volumes:
+  ymariadb:

dockerentry.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+java -jar server.jar

server/.dockerignore

@@ -0,0 +1,2 @@
+build
+.gradle

server/build.gradle

@@ -44,3 +44,11 @@ dependencies {
 tasks.named('test') {
     useJUnitPlatform()
 }
+
+jar {
+    manifest {
+        attributes(
+                'Main-Class': 'com.usatiuk.tjv.y.server.ServerApplication'
+        )
+    }
+}

server/src/main/java/com/usatiuk/tjv/y/server/WebConfig.java

@@ -2,9 +2,13 @@ package com.usatiuk.tjv.y.server;
 
 import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.FileSystemResource;
 import org.springframework.core.io.Resource;
 import org.springframework.http.CacheControl;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
@@ -12,6 +16,9 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.resource.ResourceResolver;
 import org.springframework.web.servlet.resource.ResourceResolverChain;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.time.Duration;
 import java.util.List;
 
@@ -21,9 +28,9 @@ public class WebConfig implements WebMvcConfigurer {
     static class AppResourceResolver implements ResourceResolver {
         @Override
         public Resource resolveResource(HttpServletRequest request, String requestPath, List<? extends Resource> locations, ResourceResolverChain chain) {
-            ClassPathResource res = new ClassPathResource("/app/" + requestPath);
+            FileSystemResource res = new FileSystemResource("/usr/src/app/client/dist/" + requestPath);
             if (res.exists()) return res;
-            ClassPathResource indexRes = new ClassPathResource("/app/index.html");
+            FileSystemResource indexRes = new FileSystemResource("/usr/src/app/client/dist/index.html");
             if (indexRes.exists()) return indexRes;
             return null;
         }
@@ -34,9 +41,24 @@ public class WebConfig implements WebMvcConfigurer {
         }
     }
 
+
+    @RestController
+    @RequestMapping(value = "/app", produces = MediaType.TEXT_HTML_VALUE)
+    static class AppRootContoller {
+        @GetMapping
+        public String get() throws IOException {
+            return Files.readString(Path.of("/usr/src/app/client/dist/index.html"));
+        }
+
+        @GetMapping("/")
+        public String getSlash() throws IOException {
+            return Files.readString(Path.of("/usr/src/app/client/dist/index.html"));
+        }
+    }
+
     @Override
     public void addViewControllers(ViewControllerRegistry registry) {
-        registry.addRedirectViewController("/app/", "/app/index.html");
+        registry.addRedirectViewController("/", "/app");
     }
 
     @Override

server/src/main/java/com/usatiuk/tjv/y/server/security/WebSecurityConfig.java

@@ -63,6 +63,7 @@ public class WebSecurityConfig {
                         .requestMatchers(mvc.pattern("/swagger-ui*/**")).permitAll()
                         .requestMatchers(mvc.pattern("/v3/**")).permitAll()
                         .requestMatchers(mvc.pattern("/error")).permitAll()
+                        .requestMatchers(mvc.pattern("/")).permitAll()
                         .anyRequest().hasAuthority(UserRoles.ROLE_USER.name()))
                 .sessionManagement((session) -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                 .addFilterBefore(jwtRequestFilter, UsernamePasswordAuthenticationFilter.class)