How to install gitlab on an ubuntu server where Jira is already installed

Hello ,

I´m trying to install gitlab ce on Ubuntu 18.04. Nginx is installed and Jira and also GitLab.

I turned off nginx in the gitlab configuration. I want to use my own nginx since all pages are managed there. How do I have to customize the configuration for nginx and gitlab so the git lab can be reached via https on a subdomain

Best regards

That is currently my ngnix site-avaible file

server {

	listen git.****.com:80;
	error_log /var/log/nginx/git_error.log;
	access_log /var/log/nginx/git_access.log;
	return 301 https://$server_name$request_uri;

# /etc/nginx/conf.d/git.conf

server {

	listen git.******.com:443 ;
	server_name git.*****.com;
	root /opt/gitlab/embedded/service/gitlab-rails/public;
	error_log /var/log/nginx/git_error.log;
	access_log /var/log/nginx/git_access.log;
	ssl on;
	ssl_certificate /etc/nginx/ssl/nginx.crt;
	ssl_certificate_key /etc/nginx/ssl/nginx.key;

	client_max_body_size 10M;

	location / {

		# proxy_set_header Host $host;
		# proxy_set_header X-Real-IP $remote_addr;
		# proxy_set_header X-Forwarded-Proto https;
		# proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		# proxy_pass http//;

		proxy_read_timeout 300;
		proxy_connect_timeout 300;
		proxy_redirect off;

		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_set_header Host $http_host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Frame-Options SAMEORIGIN;