Add Docker deployment support with compose, entrypoint and docs

- Add Dockerfile (pre-built binary) and Dockerfile.source
- Add docker-compose.yml, docker-compose.prod.yml, docker-compose.override.yml
- Add docker-entrypoint.sh with non-root user support
- Add .dockerignore and helper scripts (scripts/docker-build.sh, scripts/docker-run.sh)
- Add docs/en/docker.md with full Docker guide
- Update docs/en/deployment.md and README.md
- Fix src/barabadb/core/config.nim to read BARADB_ADDRESS, BARADB_PORT, BARADB_DATA_DIR from env
- Fix src/barabadb/core/httpserver.nim missing wire import

docker-compose.yml

@@ -1,23 +1,56 @@
-version: "3.9"
+# BaraDB — Development Docker Compose
+# Usage: docker compose up -d
+
 services:
   baradb:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: baradb:latest
+    container_name: baradb-dev
+    hostname: baradb
+    restart: unless-stopped
+
     ports:
-      - "9000:9000"
-      - "9470:9470"
-      - "9471:9471"
+      - "9472:9472"   # Binary protocol
+      - "9912:9912"   # HTTP/REST API
+      - "9913:9913"   # WebSocket
+
     volumes:
       - baradb_data:/data
+      # Монтираме WAL директорията отделно за по-добра производителност (по желание)
+      # - baradb_wal:/data/server/wal
+
     environment:
-      - BARADB_PORT=9000
+      - BARADB_ADDRESS=0.0.0.0
+      - BARADB_PORT=9472
       - BARADB_DATA_DIR=/data
-      - BARADB_HTTP_PORT=9470
-      - BARADB_WS_PORT=9471
+      - BARADB_LOG_LEVEL=debug
+
     healthcheck:
-      test: ["CMD", "wget", "-q", "--spider", "http://localhost:9470/health"]
+      test: ["CMD", "sh", "-c", "wget -qO- http://localhost:9912/health >/dev/null 2>&1"]
       interval: 10s
       timeout: 5s
       retries: 3
+      start_period: 15s
+
+    # Development resource limits (по-леки)
+    deploy:
+      resources:
+        limits:
+          cpus: '2.0'
+          memory: 2G
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+
+    networks:
+      - baradb_net
 
 volumes:
   baradb_data:
+    driver: local
+
+networks:
+  baradb_net:
+    driver: bridge