Best approach for deploying Angular app in Spring Boot

Avoid @EnableWebMvc

WebConfig

package net.pupli.web_server.config;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.http.HttpStatus;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.GsonHttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;
import org.springframework.web.servlet.resource.EncodedResourceResolver;
import org.springframework.web.servlet.resource.GzipResourceResolver;
import org.springframework.web.servlet.resource.PathResourceResolver;

import java.io.IOException;
import java.util.List;

@Configuration
@EnableAutoConfiguration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        // enable cache for static files
/*        registry.addResourceHandler("/**")
                .addResourceLocations("classpath:/static/")
                .setCachePeriod(3600 * 24 * 7);*/

        // serve pre gzip files in static folder
        registry.addResourceHandler("/**")
                .addResourceLocations("classpath:/static/")
                .setCachePeriod(3600 * 24 * 7)
                .resourceChain(false)
                .addResolver(new EncodedResourceResolver());

        registry.addResourceHandler("/index.html")
                .addResourceLocations("classpath:/static/")
                .setCachePeriod(0);
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/notFound").setViewName("forward:/index.html");
    }

    @Bean
    public WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> containerCustomizer() {
        return container -> {
            container.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND,
                    "/notFound"));
        };
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        GsonHttpMessageConverter gsonHttpMessageConverter = new GsonHttpMessageConverter();
        converters.add(gsonHttpMessageConverter);
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**");
    }
}

References
https://stackoverflow.com/questions/44692781/configure-spring-boot-to-redirect-404-to-a-single-page-app
https://stackoverflow.com/questions/39331929/spring-catch-all-route-for-index-html/42998817

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