nginx reverse proxy folder

The issue is that when you use a trailing slash with the proxy_pass directive, the default behaviour for proxy_redirect is that the following :

location /test/ {
    proxy_pass http://192.168.1.202/;
    proxy_set_header Host $host;
}

Is the same as :

location /test/ {
    proxy_pass http://192.168.1.202/;
    proxy_redirect http://192.168.1.202/ /test/;
    proxy_set_header Host $host;
}

So given the curl output, you must set this up :

location /test/ {
    proxy_pass http://192.168.1.202/;
    proxy_redirect http://$host/ /test/;
    proxy_set_header Host $host;
}

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