refactor: standardize environment variable naming and add PING_SERVICE_URL configuration

Aligned environment variable naming across backend and infrastructure files for improved consistency (e.g., `SPRING_CLOUD_CONSUL` and `SPRING_SECURITY_OAUTH2_RESOURCESERVER`). Introduced `PING_SERVICE_URL` to support dynamic Ping-Service routing. Updated Docker Compose health checks, profiles, and memory settings for scalability and stability.

backend/infrastructure/gateway/src/main/kotlin/at/mocode/infrastructure/gateway/config/GatewayConfig.kt

@@ -1,5 +1,6 @@
 package at.mocode.infrastructure.gateway.config
 
+import org.springframework.beans.factory.annotation.Value
 import org.springframework.cloud.gateway.route.RouteLocator
 import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder
 import org.springframework.cloud.gateway.route.builder.filters
@@ -8,7 +9,9 @@ import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
 
 @Configuration
-class GatewayConfig {
+class GatewayConfig(
+    @Value("\${ping.service.url:http://localhost:8082}") private val pingServiceUrl: String
+) {
 
     @Bean
     fun customRouteLocator(builder: RouteLocatorBuilder): RouteLocator {
@@ -22,7 +25,7 @@ class GatewayConfig {
                         it.fallbackUri = java.net.URI.create("forward:/fallback/ping")
                     }
                 }
-                uri("http://ping-service:8082")
+                uri(pingServiceUrl)
             }
         }
     }

backend/infrastructure/gateway/src/main/resources/application.yaml

@@ -1,5 +1,5 @@
 server:
-  port: 8081
+  port: ${GATEWAY_SERVER_PORT:8081}
 
 spring:
   application:
@@ -7,7 +7,6 @@ spring:
   autoconfigure:
     exclude:
       - "org.springframework.cloud.client.loadbalancer.LoadBalancerAutoConfiguration"
-
   # --- VALKEY (für Rate Limiting) ---
   data:
     valkey:
@@ -18,8 +17,8 @@ spring:
   # --- CONSUL (Service Discovery) ---
   cloud:
     consul:
-      host: ${CONSUL_HOST:localhost}
-      port: ${CONSUL_PORT:8500}
+      host: ${SPRING_CLOUD_CONSUL_HOST:localhost}
+      port: ${SPRING_CLOUD_CONSUL_PORT:8500}
       discovery:
         register: true
         service-name: ${spring.application.name}
@@ -38,8 +37,8 @@ spring:
           # Keycloak URL. Lokal: localhost:8080 (oder 8180 je nach Mapping).
           # Im Docker: keycloak:8080.
           # Wir nutzen hier localhost:8180 als Default (siehe docker-compose Port Mapping).
-          issuer-uri: ${KEYCLOAK_ISSUER_URI:http://localhost:8180/realms/meldestelle}
-          jwk-set-uri: ${KEYCLOAK_JWK_SET_URI:http://localhost:8180/realms/meldestelle/protocol/openid-connect/certs}
+          issuer-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_ISSUER_URI:http://localhost:8180/realms/meldestelle}
+          jwk-set-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_JWK_SET_URI:http://localhost:8180/realms/meldestelle/protocol/openid-connect/certs}
 
 management:
   endpoints:
@@ -56,3 +55,10 @@ management:
       probability: 1.0
     propagation:
       type: "w3c"
+
+# --- Custom Service URLs ---
+# Default: Localhost (für Entwicklung ohne Docker)
+# Im Docker-Compose überschreiben wir das mit dem Service-Namen
+ping:
+  service:
+    url: ${PING_SERVICE_URL:http://localhost:8082}

backend/services/ping/ping-service/src/main/resources/application.yaml

@@ -1,6 +1,6 @@
 # Port, auf dem das Ping-Service läuft
 server:
-  port: ${PING_SERVICE_PORT:8082}
+  port: ${PING_SERVER_PORT:8082}
 
 spring:
   application:
@@ -24,7 +24,7 @@ spring:
 
   flyway:
     enabled: true
-    # Erlaubt Migration auch wenn DB nicht leer ist (wichtig für Dev)
+    # Erlaubt die Migration, auch wenn DB nicht leer ist (wichtig für Dev)
     baseline-on-migrate: true
     # Sucht standardmäßig in classpath:db/migration
 
@@ -33,13 +33,13 @@ spring:
       resourceserver:
         jwt:
           # Keycloak URL (lokal via Port Forwarding)
-          issuer-uri: ${KEYCLOAK_ISSUER_URI:http://localhost:8180/realms/meldestelle}
-          jwk-set-uri: ${KEYCLOAK_JWK_SET_URI:http://localhost:8180/realms/meldestelle/protocol/openid-connect/certs}
+          issuer-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_ISSUER_URI:http://localhost:8180/realms/meldestelle}
+          jwk-set-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_JWK_SET_URI:http://localhost:8180/realms/meldestelle/protocol/openid-connect/certs}
 
   cloud:
     consul:
-      host: ${CONSUL_HOST:localhost}
-      port: ${CONSUL_PORT:8500}
+      host: ${SPRING_CLOUD_CONSUL_HOST:localhost}
+      port: ${SPRING_CLOUD_CONSUL_PORT:8500}
       enabled: ${CONSUL_ENABLED:true}
       discovery:
         enabled: ${CONSUL_ENABLED:true}