feat: healthchecks for postgres, redis, minio;

feat: backend container now depends on postgres, redis and minio (must be healthy);
feat: frontend depends on backend being healthy

docker-compose.yml

@@ -3,9 +3,16 @@ services:
   backend:
     build: ./backend
     restart: unless-stopped
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+      minio:
+        condition: service_healthy
     healthcheck:
       test: ["CMD", "/usr/bin/curl", "-f", "http://localhost:8080/service/health"]
-      interval: 30s
+      interval: 5s
       timeout: 10s
       retries: 3 
     ports:
@@ -16,11 +23,19 @@ services:
   frontend:
     build: ./frontend
     restart: unless-stopped
+    depends_on:
+      backend:
+        condition: service_healthy
     networks:
       - easywish-network
 
   minio:
     image: minio/minio
+    healthcheck:
+      test: [ "CMD", "curl", "-I", "localhost:9000/minio/health/live" ]
+      interval: 5s
+      timeout: 10s
+      retries: 3
     environment:
       MINIO_ROOT_USER: ${MINIO_ROOT_USER}
       MINIO_ROOT_PASSWORD: ${MINIO_ROOT_PASSWORD}
@@ -34,6 +49,11 @@ services:
 
   postgres:
     image: postgres:latest
+    healthcheck:
+      test: [ "CMD", "pg_isready", "-q", "-d", "${POSTGRES_DB}", "-U", "${POSTGRES_USER}" ]
+      interval: 5s
+      timeout: 10s
+      retries: 3
     environment:
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
@@ -48,6 +68,11 @@ services:
 
   redis:
     image: eqalpha/keydb
+    healthcheck:
+      test: [ "CMD", "redis-cli", "--raw", "incr", "ping" ]
+      interval: 5s
+      timeout: 10s
+      retries: 3
     command: ["keydb-server", "--requirepass", "${REDIS_PASSWORD}"]
     environment:
       REDIS_PASSWORD: ${REDIS_PASSWORD}