chore(docker): optimize Dockerfiles and add healthchecks for Coolify deployment

- Add build arguments and environment variables for OAuth client IDs in frontend Dockerfile
- Install wget and add HEALTHCHECK commands to frontend and backend Dockerfiles
- Create non-root user in backend Dockerfile for improved security
- Update docker-compose.yml with healthcheck configurations and dynamic port/environment variable support
- Add network configuration and restart policies to docker-compose services
- Expand .env.example with additional OAuth secrets, ports, and environment variables for Coolify
- Enhance README.md with detailed Coolify deployment instructions and required environment variables table

docker-compose.yml

@@ -5,24 +5,49 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
+      args:
+        - VITE_MS_CLIENT_ID=${VITE_MS_CLIENT_ID}
+        - VITE_GOOGLE_CLIENT_ID=${VITE_GOOGLE_CLIENT_ID}
+        - VITE_API_URL=${VITE_API_URL:-}
     ports:
-      - "80:80"
+      - "${FRONTEND_PORT:-80}:80"
     depends_on:
-      - backend
-    environment:
-      - VITE_MS_CLIENT_ID=${VITE_MS_CLIENT_ID}
-      - VITE_GOOGLE_CLIENT_ID=${VITE_GOOGLE_CLIENT_ID}
+      backend:
+        condition: service_healthy
+    restart: unless-stopped
+    healthcheck:
+      test: [ "CMD", "wget", "-q", "--spider", "http://localhost:80" ]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+    labels:
+      - "coolify.managed=true"
 
   backend:
     build:
       context: ./server
       dockerfile: Dockerfile
     ports:
-      - "3001:3001"
+      - "${BACKEND_PORT:-3001}:3001"
     environment:
       - PORT=3001
+      - NODE_ENV=${NODE_ENV:-production}
       - VITE_MS_CLIENT_ID=${VITE_MS_CLIENT_ID}
       - MS_CLIENT_SECRET=${MS_CLIENT_SECRET}
       - VITE_GOOGLE_CLIENT_ID=${VITE_GOOGLE_CLIENT_ID}
       - GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET}
       - REDIRECT_URI=${REDIRECT_URI}
+    restart: unless-stopped
+    healthcheck:
+      test: [ "CMD", "wget", "-q", "--spider", "http://localhost:3001/health" ]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 15s
+    labels:
+      - "coolify.managed=true"
+
+networks:
+  default:
+    name: cloudstream-network