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authentik behind a reverse-proxy

If you want to access authentik behind a reverse-proxy, use a config like this. It is important that Websocket is enabled, so that Outposts can connect.

map $http_upgrade $connection_upgrade {    default upgrade;    ''      close;}
server {    # Server config    listen 80;    server_name sso.domain.tld;
    # 301 to SSL    location / {            return 301 https://$host$request_uri;    }}server {    # Server config    listen 443 ssl http2;    server_name sso.domain.tld;
    # SSL Certs    ssl_certificate /etc/letsencrypt/live/domain.tld/fullchain.pem;    ssl_certificate_key /etc/letsencrypt/live/domain.tld/privkey.pem;
    # Proxy site    location / {        proxy_pass https://<hostname of your authentik server>:9443;        proxy_http_version 1.1;        proxy_set_header X-Forwarded-Proto https;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        # This needs to be set inside the location block, very important.        proxy_set_header Host $host;        proxy_set_header Upgrade $http_upgrade;        proxy_set_header Connection $connection_upgrade;    }}