build: fix Docker image build and add Docker Hub compose

docker-compose.hub.yml

@@ -0,0 +1,23 @@
+services:
+  offlineacademy:
+    image: nicetry247/offlineacademy:latest
+    container_name: offlineacademy
+    restart: unless-stopped
+    ports:
+      - "6767:6767"
+    env_file:
+      - .env
+    environment:
+      NODE_ENV: production
+      PORT: 6767
+      HOSTNAME: 0.0.0.0
+      DATABASE_URL: file:./dev.db
+      COURSES_ROOT: ./My_Courses
+      NEXT_PUBLIC_APP_URL: http://localhost:6767
+    volumes:
+      # Put your course folders wherever you want on the host,
+      # then map that folder to /app/My_Courses inside the container.
+      - ./My_Courses:/app/My_Courses
+
+      # Persist the SQLite database outside the image.
+      - ./prisma/dev.db:/app/prisma/dev.db