You can read the official documentation, I just make it easier here.
Pull the image from Dockerhub or GHCR:
podman pull docker.io/searxng/searxng:latest
# ghcr.io/searxng/searxng
and run it in the background:
podman run -d -it -p 4005:8080 -name searxng searxng:latest
Create a subdomain and get a certificate for it then point it to the port.
server {
listen 80;
listen [::]:80;
server_name sx.urdomain.com;
location / {
proxy_pass http://127.0.0.1:4005/;
proxy_buffering off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
}
listen 443 ssl;
ssl_certificate /etc/letsencrypt/live/sx.urdomain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/sx.urdomain.com/privkey.pem;
include /etc/letsencrypt/options-ssl-nginx.conf;
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}