Problem with internal reverse proxy URL

[saschabrockel]

Hello,

I'm struggling with setting up Postiz in Docker. When I do it with a real public available domain it works fine! But when I try an internal IP I had too many problems with Google and even redirectmeto couldn't help. It just didn't work for Google.

So I thought it won't be a problem as I do it for other services. I have an internal domain like postiz.int.my-domain.de which also works for Postiz basic functions but is not fully functional as many errors occur. I have set up this postiz.int.my-domain.de URL with an SSL certificate in NGINX Proxy Manager and forward it to Postiz like this:

I can open Postiz over this domain in the browser but images won't be available for example.

The logs in the container:

ERR | ts=1745463503.4209135 logger=http.handlers.reverse_proxy msg=aborting with incomplete response upstream=localhost:4200 duration=0.010556926 request={"remote_ip":"::1","remote_port":"53288","client_ip":"::1","proto":"HTTP/1.1","method":"GET","host":"localhost:5000","uri":"/auth","headers":{"X-Forwarded-Proto":["http"],"X-Forwarded-Host":["localhost:5000"],"User-Agent":["Wget"],"X-Forwarded-For":["::1"]}} error=reading: context canceled 

 ⨯ TypeError: fetch failed
    at node:internal/deps/undici/undici:13178:13
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async fetchExternalImage (/app/node_modules/next/dist/server/image-optimizer.js:600:17)
    at async NextNodeServer.imageOptimizer (/app/node_modules/next/dist/server/next-server.js:654:48)
    at async cacheEntry.imageResponseCache.get.incrementalCache (/app/node_modules/next/dist/server/next-server.js:182:65)
    at async /app/node_modules/next/dist/server/response-cache/index.js:90:36
    at async /app/node_modules/next/dist/lib/batcher.js:45:32 {
  [cause]: Error: getaddrinfo ENOTFOUND postiz.int.my-domain.de
      at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:120:26)
      at GetAddrInfoReqWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
    errno: -3007,
    code: 'ENOTFOUND',
    syscall: 'getaddrinfo',
    hostname: 'postiz.int.my-domain.de'
  }
}
 ⨯ TypeError: fetch failed
    at node:internal/deps/undici/undici:13178:13
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async fetchExternalImage (/app/node_modules/next/dist/server/image-optimizer.js:600:17)
    at async NextNodeServer.imageOptimizer (/app/node_modules/next/dist/server/next-server.js:654:48)
    at async cacheEntry.imageResponseCache.get.incrementalCache (/app/node_modules/next/dist/server/next-server.js:182:65)
    at async /app/node_modules/next/dist/server/response-cache/index.js:90:36
    at async /app/node_modules/next/dist/lib/batcher.js:45:32 {
  [cause]: Error: getaddrinfo ENOTFOUND postiz.int.my-domain.de

This my docker-compose.yml (of course without the secrets for the provider):

services:
    postiz-app:
        image: ghcr.io/gitroomhq/postiz-app:latest
        container_name: postiz
        networks:
            - unraid
        environment:
            - TZ=Europe/Berlin
            - MAIN_URL=https://postiz.int.my-domain.de
            - FRONTEND_URL=https://postiz.int.my-domain.de
            - NEXT_PUBLIC_BACKEND_URL=https://postiz.int.my-domain.de/api
            - JWT_SECRET=
            - DATABASE_URL=postgresql://postiz:password@postiz-db:5432/postiz
            - REDIS_URL=redis://redis:6379
            - STORAGE_PROVIDER=local
            - CLOUDFLARE_ACCOUNT_ID=
            - CLOUDFLARE_ACCESS_KEY=
            - CLOUDFLARE_SECRET_ACCESS_KEY=
            - CLOUDFLARE_BUCKETNAME=
            - CLOUDFLARE_BUCKET_URL=
            - CLOUDFLARE_REGION=auto
            - X_CLIENT=
            - X_SECRET=
            - X_API_KEY=
            - X_API_SECRET=
            - LINKEDIN_CLIENT_ID=
            - LINKEDIN_CLIENT_SECRET=
            - REDDIT_CLIENT_ID=
            - REDDIT_CLIENT_SECRET=
            - GITHUB_CLIENT_ID=
            - GITHUB_CLIENT_SECRET=
            - BEEHIIVE_API_KEY=
            - BEEHIIVE_PUBLICATION_ID=
            - THREADS_APP_ID=
            - THREADS_APP_SECRET=
            - FACEBOOK_APP_ID=
            - FACEBOOK_APP_SECRET=
            - YOUTUBE_CLIENT_ID=
            - YOUTUBE_CLIENT_SECRET=
            - TIKTOK_CLIENT_ID=
            - TIKTOK_CLIENT_SECRET=
            - PINTEREST_CLIENT_ID=
            - PINTEREST_CLIENT_SECRET=
            - DRIBBLE_CLIENT_ID=
            - DRIBBLE_CLIENT_SECRET=
            - OPENAI_API_KEY=
            - NOT_SECURED=false
            - UPLOAD_DIRECTORY=/uploads
            - NEXT_PUBLIC_DISCORD_SUPPORT=
            - NEXT_PUBLIC_POLOTNO=
            - FEE_AMOUNT=0.05
            - STRIPE_PUBLISHABLE_KEY=
            - STRIPE_SECRET_KEY=
            - STRIPE_SIGNING_KEY=
            - STRIPE_SIGNING_KEY_CONNECT=
            - BACKEND_INTERNAL_URL=http://localhost:3000
            - IS_GENERAL=true
            - NEXT_PUBLIC_UPLOAD_DIRECTORY=/uploads
        ports:
            - 5015:5000/tcp
        volumes:
            - /mnt/cache/appdata/website/postiz/uploads:/uploads:rw
            - /mnt/cache/appdata/website/postiz/config:/config:rw
        healthcheck:
            test: wget -nv -t1 --spider http://localhost:5000 || exit 1
            interval: 1m
            timeout: 10s
            retries: "3"
networks:
    unraid:
        external: true
        name: unraid

For images in the browser logs I see error 500:
Failed to load resource: the server responded with a status of 500 ()

Why do I have this problems?

[ennogelhaus]

This is a installation problem, use the discord for that.