Combine form based and oauth2 based login providers in a spring boot 2 + spring security 5 app - spring-boot

Question

I currently have a working setup for a form based login in my app using spring boot 2.0.6 and spring security 5:
#Configuration
#EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private MyUserDetailsService userDetailsService;
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers("/", "/home").permitAll().anyRequest().authenticated().and().formLogin()
.loginPage("/login").permitAll().and().logout().permitAll();
}
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(authenticationProvider());
}
#Bean
public DaoAuthenticationProvider authenticationProvider() {
DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
authProvider.setUserDetailsService(userDetailsService);
authProvider.setPasswordEncoder(encoder());
return authProvider;
}
#Bean
public PasswordEncoder encoder() {
return new BCryptPasswordEncoder(11);
}
}
There are also examples of adding support for oauth2 with the following spring dependency:
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-oauth2-client</artifactId>
</dependency>
and a helpful blog post that does well to show how you can use it:
https://spring.io/blog/2018/03/06/using-spring-security-5-to-integrate-with-oauth-2-secured-services-such-as-facebook-and-github
How do I extend my current security config to add support for Oauth2 logins such as facebook?
Thank you kindly,
Jason