properly serve public folder

src/main/java/me/minidigger/hangar/config/MvcConfig.java

@@ -2,11 +2,16 @@ package me.minidigger.hangar.config;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.http.CacheControl;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
 import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;
 
+import java.util.concurrent.TimeUnit;
+
 @Configuration
-public class MvcConfig {
+public class MvcConfig implements WebMvcConfigurer {
 
     @Bean
     public FreeMarkerViewResolver freemarkerViewResolver() {
@@ -23,4 +28,11 @@ public class MvcConfig {
         freeMarkerConfigurer.setTemplateLoaderPath("classpath:templates");
         return freeMarkerConfigurer;
     }
+
+    @Override
+    public void addResourceHandlers(ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/assets/**")
+                .addResourceLocations("classpath:/public/")
+                .setCacheControl(CacheControl.maxAge(1, TimeUnit.DAYS));
+    }
 }

src/main/resources/application.properties

@@ -1,4 +1,12 @@
+###########
+# General #
+###########
 server.port=8080
+spring.mvc.static-path-pattern=/content/**
+
+############
+# DataBase #
+############
 spring.jpa.database=POSTGRESQL
 spring.datasource.platform=postgres
 spring.datasource.url=jdbc:postgresql://localhost:5432/hangar