Specifying hostname which Kamal Proxy uses to perform health check

[LondonAppDev]

I'm attempting to use Kamal to deploy a Django app.

Django requires an ALLOWED_HOSTS configuration value which specifies which hostnames are allowed to make requests to the running application. This is a security mechanism to protect against HTTP Host Header attacks.

The problem is the Kamal Proxy health check is making requests to the container ID, so I'm getting failures like this:

Invalid HTTP_HOST header: '3f7873fbad7c:9000'. You may need to add '3f7873fbad7c' to ALLOWED_HOSTS.

Has anyone faced this issue before? Is there a way to make the health check use the container name?

Thank in advance.

PS. This tool is a game changer for simplifying Docker deployment.

[garraflavatra]

You can fix this by adding the health endpoint as middleware before Django's SecurityMiddleware: #992

Make sure to commit first, and then run kamal redeploy.