feat: docker-compose.gpu.yml overlay — NVIDIA GPU pass-through + NVENC worker

docker-compose.gpu.yml

@@ -0,0 +1,33 @@
+# Wild Dragon MAM — GPU overlay
+# Apply on top of docker-compose.yml on nodes with NVIDIA GPUs.
+#
+# Prerequisites: NVIDIA Container Toolkit installed on the host.
+#   Install: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/
+#
+# Usage (core MAM node with GPUs):
+#   docker compose -f docker-compose.yml -f docker-compose.gpu.yml up -d
+#
+# Usage (worker node with GPUs):
+#   docker compose -f docker-compose.worker.yml -f docker-compose.gpu.yml --profile worker up -d
+#
+# This overlay:
+#   - Rebuilds worker from Dockerfile.gpu (CUDA base + ffmpeg NVENC)
+#   - Passes all NVIDIA GPUs into the worker container
+#   - Sets NVENC_ENABLED=true so the worker prioritises h264_nvenc/hevc_nvenc
+
+services:
+  worker:
+    build:
+      context: ./services/worker
+      dockerfile: Dockerfile.gpu
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: all
+              capabilities: [gpu]
+    environment:
+      NVENC_ENABLED:              "true"
+      NVIDIA_VISIBLE_DEVICES:     all
+      NVIDIA_DRIVER_CAPABILITIES: video,compute,utility