Add Docker Compose configuration for PostgreSQL service

postgres/docker-compose.yml

@@ -0,0 +1,48 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: fairreview_postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB:-fairreview}
+      POSTGRES_USER: ${POSTGRES_USER:-zhuma}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      PGDATA: /var/lib/postgresql/data/pgdata
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./ssl:/ssl:ro
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-zhuma} -d ${POSTGRES_DB:-fairreview}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+        reservations:
+          memory: 256M
+    security_opt:
+      - no-new-privileges:true
+    tmpfs:
+      - /tmp
+      - /var/run/postgresql
+    command: >
+      postgres
+      -c ssl=on
+      -c ssl_cert_file=/ssl/server.crt
+      -c ssl_key_file=/ssl/server.key
+      -c ssl_ca_file=/ssl/ca.crt
+      -c max_connections=100
+      -c shared_buffers=128MB
+      -c effective_cache_size=256MB
+      -c maintenance_work_mem=64MB
+      -c checkpoint_completion_target=0.9
+      -c wal_buffers=16MB
+      -c default_statistics_target=100
+
+volumes:
+  postgres_data: