feat: Implement payment service with Stripe integration

docker-compose.yml

@@ -138,9 +138,15 @@ services:
     environment:
       - PORT=8084
       - DATABASE_URL=postgres://auron:auron_pass@payments-db:5432/payments_db?sslmode=disable
+      - REDIS_URL=redis://redis:6379/0
+      - KAFKA_BROKERS=kafka:29092
+      - STRIPE_SECRET_KEY=${STRIPE_SECRET_KEY}
+      - STRIPE_WEBHOOK_SECRET=${STRIPE_WEBHOOK_SECRET}
     depends_on:
       payments-db:
         condition: service_healthy
+      kafka:
+        condition: service_healthy
     networks:
       - auron-network
     restart: unless-stopped
@@ -289,6 +295,8 @@ services:
     volumes:
       - zookeeper_data:/var/lib/zookeeper/data
       - zookeeper_log:/var/lib/zookeeper/log
+    networks:
+      - auron-network
     healthcheck:
       test: nc -z localhost 2181 || exit -1
       interval: 10s
@@ -312,6 +320,8 @@ services:
       KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
     volumes:
       - kafka_data:/var/lib/kafka/data
+    networks:
+      - auron-network
     healthcheck:
       test:
         [
@@ -332,6 +342,8 @@ services:
     environment:
       KAFKA_CLUSTERS_0_NAME: local
       KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS: kafka:29092
+    networks:
+      - auron-network
 
   # ============================================================
   # CACHE

services/payment-service/.env.example

@@ -0,0 +1,8 @@
+# Payment Service
+PORT=8084
+DATABASE_URL=postgres://auron:auron_pass@localhost:5435/payments_db?sslmode=disable
+REDIS_URL=redis://localhost:6379/0
+KAFKA_BROKERS=localhost:9092
+STRIPE_SECRET_KEY=sk_test_...
+STRIPE_WEBHOOK_SECRET=whsec_...
+GORM_LOG_LEVEL=warn

services/payment-service/Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /app
+
+RUN apk add --no-cache git
+
+COPY go.mod go.sum ./
+
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux go build -o /payment-service .
+
+FROM alpine:3.18
+
+RUN apk add --no-cache ca-certificates curl
+
+WORKDIR /app
+
+COPY --from=builder /payment-service .
+
+EXPOSE 8084
+
+CMD ["./payment-service"]