feat: 提交 Docker 环境配置文件，更新 .gitignore 规则

- 新增 docker/app/.env 应用环境配置
- 新增 docker/compute/.env 计算节点环境配置
- 更新 .gitignore 允许提交 .env 配置文件

Co-Authored-By: Claude <noreply@anthropic.com>

docker/compute/.env

@@ -0,0 +1,40 @@
+COMPUTE_ENV=prod
+COMPUTE_HOST_ID=gpu-node-01
+COMPUTE_EXECUTION_MODE=real
+MODELTF_ROUTE_PREFIX=/modelTF
+# Five-digit host ports exposed outside the compute server.
+COMPUTE_API_PORT=19100
+FILE_GATEWAY_PORT=19101
+COMPUTE_API_IMAGE=yg-ft-compute-api:latest
+
+# The application server actively polls Compute API; compute server does not need reverse access.
+COMPUTE_AUTH_ENABLED=true
+COMPUTE_SERVICE_TOKEN=change_me
+ENABLE_APP_CALLBACK=false
+
+# LLaMA-Factory is provided by the official hiyouga/llamafactory base image.
+LLAMA_FACTORY_HOME=/app/LLaMA-Factory
+
+YG_FT_DATA_ROOT=/data/yg-ft
+YG_FT_DATA_ROOT_HOST=./data/yg-ft
+YG_FT_MODEL_ROOT=/data/yg-ft/models
+YG_FT_MODEL_ROOT_HOST=./data/yg-ft/models
+YG_FT_DATASET_ROOT=/data/yg-ft/datasets
+YG_FT_DATASET_ROOT_HOST=./data/yg-ft/datasets
+YG_FT_OUTPUT_ROOT=/data/yg-ft/outputs
+YG_FT_OUTPUT_ROOT_HOST=./data/yg-ft/outputs
+TRAINING_LOG_ROOT=/opt/yg-ft/logs/training
+TRAINING_LOG_ROOT_HOST=./data/yg-ft/logs/training
+COMPUTE_LOG_ROOT_HOST=./data/yg-ft/logs/compute
+
+# Optional fallback used when nvidia-smi is unavailable.
+# Leave COMPUTE_GPU_COUNT=0 on real GPU servers with working NVIDIA runtime.
+COMPUTE_GPU_COUNT=0
+COMPUTE_GPU_NAME=NVIDIA A800-SXM4-80GB
+COMPUTE_GPU_MEMORY_GB=80
+COMPUTE_GPU_POWER_LIMIT_W=300
+
+LOG_DIR=/opt/yg-ft/logs/compute
+CUDA_VISIBLE_DEVICES=all
+NVIDIA_VISIBLE_DEVICES=all
+NVIDIA_DRIVER_CAPABILITIES=compute,utility