Enhance act_runner setup with jq installation verification and systemd service configuration

docker-compose.yml

@@ -0,0 +1,14 @@
+version: "3.9"
+
+services:
+  installer:
+    image: nginx:alpine
+    container_name: act-runner-installer
+    restart: unless-stopped
+    ports:
+      - "${PORT:-1234}:80"
+    volumes:
+      - ./install.sh:/usr/share/nginx/html/install.sh:ro
+      # Optional: expose README too
+      - ./README.md:/usr/share/nginx/html/README.md:ro
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro