fix: adjust Postgres resource limits and healthcheck parameters. Increase memory limit to 256M and modify healthcheck retries and start period to improve stability. Add notes on shared memory requirements and healthcheck behavior in Docker configuration.

deploy/compose/docker-compose.yaml

@@ -45,6 +45,8 @@ services:
     profiles: ["reference", "microvps", "microvps-full"]
     image: postgres:16-alpine
     restart: unless-stopped
+    # Дефолтный /dev/shm в Docker (64 МиБ) мало для Postgres; иначе ошибки shared memory при старте.
+    shm_size: "256mb"
     environment:
       POSTGRES_USER: evobgp
       POSTGRES_PASSWORD: evobgp
@@ -55,7 +57,8 @@ services:
       test: ["CMD-SHELL", "pg_isready -U evobgp -d evobgp"]
       interval: 10s
       timeout: 5s
-      retries: 5
+      retries: 12
+      start_period: 45s
     logging: *default-logging
     deploy:
       resources: