feat: add healthcheck for asn-header

Dockerfile

@@ -7,6 +7,7 @@ COPY main.go ./
 RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/asn-header-service
 
 FROM alpine:3.20
+RUN apk add --no-cache wget
 RUN adduser -D -H -u 10001 app
 USER 10001
 WORKDIR /app

docker-compose.yml

@@ -10,6 +10,12 @@ services:
       ADDR: ":8080"
     volumes:
       - asn_data:/data:ro
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:8080/healthz"]
+      interval: 30s
+      timeout: 5s
+      retries: 5
+      start_period: 20s
     networks:
       - proxy