✅ Getting Error 400: Invalid Hostname when trying to access application in Docker container
Hello, I have a .net 7 application running inside a Docker container. The .NET application has an endpoint to generate PDFs of a Razor site.
It is using pupeteer to generate the pdf, so it needs to access its own page:
I'm trying to access the page using localhost:
That works without any flaws when running the application outside of the docker container during development, but once its deployed it nolonger works.
I'm receiving
I also tried curling from within the container to localhost and get the same response:
My Program.cs looks like this:
Inside my Startup I never set any specific host.
I do set the
That results in the application listening on
Just for completeness here is my dockerfile:
It is using pupeteer to generate the pdf, so it needs to access its own page:
I'm trying to access the page using localhost:
http://localhost:80/api/...That works without any flaws when running the application outside of the docker container during development, but once its deployed it nolonger works.
I'm receiving
400: Invalid HostnameI also tried curling from within the container to localhost and get the same response:
My Program.cs looks like this:
Inside my Startup I never set any specific host.
I do set the
AllowedHostsThat results in the application listening on
Now listening on: http://[::]:80Just for completeness here is my dockerfile:
