feat: add two-node compose deployment

deploy/docker-compose.ha.yml

@@ -0,0 +1,51 @@
+# 与 deploy/docker-compose.yml 一起使用：
+# docker compose -f deploy/docker-compose.yml -f deploy/docker-compose.ha.yml up -d mysql verify orbit-a orbit-b
+# 默认不启动 base 文件中的 orbit 单节点服务，避免重复实例。
+
+x-orbit-environment: &orbit-environment
+  ORBIT_HTTP_ADDR: 0.0.0.0:8080
+  ORBIT_MYSQL_DSN: "${ORBIT_DB_USER}:${ORBIT_DB_PASSWORD}@tcp(mysql:3306)/${ORBIT_DB_NAME:-orbit}?parseTime=true&multiStatements=true"
+  ORBIT_DB_MAX_OPEN: ${ORBIT_DB_MAX_OPEN:-20}
+  ORBIT_DB_MAX_IDLE: ${ORBIT_DB_MAX_IDLE:-5}
+  ORBIT_WORKFLOW_TICK_INTERVAL: ${ORBIT_WORKFLOW_TICK_INTERVAL:-1s}
+  ORBIT_SCHEDULE_TICK_INTERVAL: ${ORBIT_SCHEDULE_TICK_INTERVAL:-1s}
+  ORBIT_RECOVERY_TICK_INTERVAL: ${ORBIT_RECOVERY_TICK_INTERVAL:-2s}
+  ORBIT_RUNTIME_BATCH_LIMIT: ${ORBIT_RUNTIME_BATCH_LIMIT:-100}
+  ORBIT_SHUTDOWN_TIMEOUT: ${ORBIT_SHUTDOWN_TIMEOUT:-10s}
+  ORBIT_WORKER_CONNECTION_LIMIT: ${ORBIT_WORKER_CONNECTION_LIMIT:-128}
+  ORBIT_EVENT_CONNECTION_LIMIT: ${ORBIT_EVENT_CONNECTION_LIMIT:-128}
+  ORBIT_DISPATCH_WORKERS: ${ORBIT_DISPATCH_WORKERS:-4}
+  ORBIT_DISPATCH_CAPACITY: ${ORBIT_DISPATCH_CAPACITY:-128}
+  ORBIT_CONSOLE_QUEUE_ID: ${ORBIT_CONSOLE_QUEUE_ID:-}
+  ORBIT_METRICS_ADDR: ${ORBIT_METRICS_ADDR:-}
+
+services:
+  orbit:
+    profiles:
+      - single
+
+  orbit-a:
+    image: ${ORBIT_IMAGE:-orbit:dev}
+    restart: unless-stopped
+    init: true
+    depends_on:
+      verify:
+        condition: service_completed_successfully
+    environment:
+      <<: *orbit-environment
+    ports:
+      - "${ORBIT_HTTP_BIND:-127.0.0.1}:${ORBIT_HTTP_PORT_A:-8081}:8080"
+    stop_grace_period: 30s
+
+  orbit-b:
+    image: ${ORBIT_IMAGE:-orbit:dev}
+    restart: unless-stopped
+    init: true
+    depends_on:
+      verify:
+        condition: service_completed_successfully
+    environment:
+      <<: *orbit-environment
+    ports:
+      - "${ORBIT_HTTP_BIND:-127.0.0.1}:${ORBIT_HTTP_PORT_B:-8082}:8080"
+    stop_grace_period: 30s