env/keycloak/nginx.conf

server {
	server_name ${KEYCLOAK_HOSTNAME} ${KEYCLOAK_HOSTNAME}.${DOMAIN_NAME};
	client_max_body_size 128m;

	location / {
		proxy_pass http://keycloak:8080;
		proxy_pass_header Set-Cookie;
		proxy_set_header Host $host;
		proxy_set_header X-Forwarded-For $remote_addr;
		proxy_set_header X-Forwarded-Proto https;
	}

	listen 443 ssl;
	ssl_certificate /etc/letsencrypt/live/${DOMAIN_NAME}/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/${DOMAIN_NAME}/privkey.pem;
	include /etc/nginx/includes/options-ssl-nginx.conf;
	include /etc/nginx/includes/challenge.conf;
	ssl_dhparam /etc/nginx/includes/ssl-dhparams.pem;
}