Added port configuration to deploy on railway

Dockerfile

@@ -4,9 +4,6 @@ RUN mvn clean package -DskipTests
 
 FROM eclipse-temurin:21-jre-alpine
 WORKDIR /alura-flix-api
-ARG DATABASE_PRO
-ARG DATABASE_TEST
-ARG JWT_SECRET
 COPY --from=build target/*.jar alura-flix-api.jar
 EXPOSE 8080
 

src/main/java/com/alura/aluraflixapi/infraestructure/railway/RailwayConfig.java

@@ -1,13 +1,16 @@
 package com.alura.aluraflixapi.infraestructure.railway;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 @Configuration
 public class RailwayConfig {
 
+    @Value("server.port")
+    private String port;
     @Bean
     String getPort(){
-        return System.getenv("PORT");
+        return this.port = System.getenv("PORT");
     }
 }