ngix many redirect to https version - docker

Question

I want to create autoredirect from http to https version of my site. This is my nginx config:
server {
listen 80;
server_name example.com;
server_tokens off;
location /.well-known/acme-challenge/ {
root /var/www/certbot;
}
location / {
proxy_pass http://frontend:4200;
# return 301 https://$host$request_uri;
}
location /api {
proxy_pass http://backend:8080;
rewrite ^/api/(.*) /$1 break;
}
}
server {
listen 443 ssl;
server_name example.com;
server_tokens off;
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
include /etc/letsencrypt/options-ssl-nginx.conf;
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
location / {
proxy_pass http://example.com;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
If uncomment this string: # return 301 https://$host$request_uri; i see to many redirect and my site isn't work. How to right configure nging for this case.

Answer 1

Thanks for comment szt you are right.
This is my new config:
server {
listen 80;
server_name example.com;
server_tokens off;
location /.well-known/acme-challenge/ {
root /var/www/certbot;
}
location / {
return 301 https://$host$request_uri;
}
}
server {
listen 443 ssl;
server_name example.com;
server_tokens off;
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
include /etc/letsencrypt/options-ssl-nginx.conf;
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
location / {
proxy_pass http://frontend:4200;
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;
}
location /api {
proxy_pass http://backend:8080;
rewrite ^/api/(.*) /$1 break;
}
}