How to Set Up Laravel in a Subfolder Using Traefik

Here’s how you can run Laravel in a subfolder with Traefik. Let’s consider this scenario:

• Traefik is already installed with entry points http and https.
• Laravel will be installed in the /app subfolder.
• Traefik and Laravel will use an external network called traefik.

Edit docker-compose.yml as following:

services:
  app:
    image: your-app-image

    # ...the rest of the configuration

    networks:
      - traefik
    labels:
      - traefik.enable=true
      - traefik.docker.network=traefik
      - traefik.constraint-label=traefik

      - traefik.http.middlewares.app-strip.stripprefix.prefixes=/app

      # HTTP entrypoint
      - traefik.http.routers.app-http.entrypoints=http
      - traefik.http.routers.app-http.rule=Host(`your-app-domain.com`) && PathPrefix(`/app`)
      - traefik.http.routers.app-http.middlewares=https-redirect,app-strip

      # HTTPS  entrypoint
      - traefik.http.routers.app-https.entrypoints=https
      - traefik.http.routers.app-https.rule=Host(`your-app-domain.com`) && PathPrefix(`/app`)
      - traefik.http.routers.app-https.tls=true
      - traefik.http.routers.app-https.middlewares=app-strip

networks:
  traefik:
    external: true

Edit .env and set the subfolder in APP_URL.

APP_URL=https://your-app-domain.com/app

# ...the rest of the configuration

Edit app/Http/Middleware/TrustProxies.php and ensure that all proxies are allowed to let Laravel generate HTTPS URLs.

Always use URL helpers like url(), route(), etc., to generate full URLs, including the subfolder path.

That’s it! Now you can run your compose file with docker compose up -d and access your Laravel application via the subfolder.