chore: expose status port in Docker/compose and document http_addr

EXPOSE 8080 in the image, publish 8080 in compose, document http_addr in the
example config, and add the CPU/memory limits so a long encode can't starve
the host.

docker-compose.yml

@@ -3,6 +3,16 @@ services:
     build: .
     container_name: videnc-vibe
     restart: unless-stopped
+    # Cap CPU/RAM so a long SVT-AV1 encode can't starve the host. Tune to taste.
+    # `podman compose` honors deploy.resources; `podman-compose` (python) wants
+    # the short keys instead — cpus: 4.0 / mem_limit: 4g / cpuset: "0-3".
+    deploy:
+      resources:
+        limits:
+          cpus: "8.0"
+          memory: 4g
+    ports:
+      - "8080:8080" # status server: GET http://host:8080/status (needs http_addr: ":8080" in config)
     volumes:
       - ./data/config.yaml:/config/config.yaml:ro # your config — paths inside must point at /data/*
       - ./data/media:/data # holds input/ output/ originals/ failed/ work/ + logs