Agregados healthchecks a hapi-fhir y hapi-db con cadena de dependencias

hapi-fhir ahora espera a que hapi-db esté healthy antes de arrancar, y
nginx espera a que hapi-fhir esté healthy. El healthcheck de hapi-fhir
consulta /fhir/metadata con start_period de 60s para tolerar el tiempo
de inicialización de Spring Boot.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -3,7 +3,8 @@ services:
     container_name: hapi-fhir
     image: "hapiproject/hapi:latest"
     depends_on:
-      - hapi-db
+      hapi-db:
+        condition: service_healthy
     volumes:
       - ./hapi-config:/data/hapi
     environment:
@@ -14,6 +15,12 @@ services:
       SPRING_DATASOURCE_PASSWORD: ${SPRING_DATASOURCE_PASSWORD}
       SPRING_DATASOURCE_DRIVERCLASSNAME: ${SPRING_DATASOURCE_DRIVERCLASSNAME}
       SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT: ${SPRING_JPA_PROPERTIES_HIBERNATE_DIALECT}
+    healthcheck:
+      test: ["CMD-SHELL", "curl -sf http://localhost:8080/fhir/metadata > /dev/null"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 60s
     networks:
       - hapi-network
   hapi-db:
@@ -63,8 +70,10 @@ services:
     container_name: nginx
     image: nginx:alpine
     depends_on:
-      - hapi-fhir
-      - bus-gateway
+      hapi-fhir:
+        condition: service_healthy
+      bus-gateway:
+        condition: service_started
     environment:
       TZ: ${TZ:-America/Argentina/Buenos_Aires}
     ports: