Redirect all to https:

server {
	listen 80;
	server_name myserver.com;
	return 301 https://$server_name$request_uri;
}

Nginx SSL configuration:

server {
	listen       443 ssl;
	server_name  myserver.com;

	ssl_certificate      /etc/ssl_keys/fullchain.pem;
	ssl_certificate_key  /etc/ssl_keys/privkey.pem;
	ssl_session_cache    shared:SSL:1m;
	ssl_session_timeout  5m;
	ssl_ciphers  HIGH:!aNULL:!MD5;
	ssl_prefer_server_ciphers  on;
}

Nginx PHP in subdirectory configuration:

            location /site {
            index index.php;
            location ~ \.php(?:$|/) {
                include fastcgi_params;
                fastcgi_pass 127.0.0.1:9000;
                fastcgi_param SCRIPT_FILENAME $request_filename; # this should not be needed but it is?!
            }
            try_files $uri $uri/ /site/index.php?$args;
        }

server {
    index  index.html index.htm index.php;

    # just for allowing symlinks
    disable_symlinks off;

    # set a higher limit for allowing to upload large files
    client_max_body_size 50m;


# a nested location block with php hosted in a separate root
    location /agendav {
        index  index.html index.htm index.php;
#        root /usr/share/webapps/agendav/web/public;
        alias /usr/share/webapps/agendav/web/public;

        location ~ /agendav(.*\.php)(?:$|/) {
            include fastcgi_params;
            set $fastcgi_script_name_ $document_root$1;
            set $fastcgi_path_info_ $2;
            fastcgi_param SCRIPT_FILENAME $fastcgi_script_name_;
            fastcgi_param PATH_INFO $fastcgi_path_info_;
#           add_header "Content-Type" "text/plain";
#           return 200 "$fastcgi_script_name_";
            fastcgi_pass 127.0.0.1:9000;
            fastcgi_intercept_errors on;
        }
    }



    location ~ \.php(?:$|/) {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_param HTTPS on;
            #add_header "Content-Type" "text/plain";
            #return 200 $document_root$fastcgi_script_name;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_intercept_errors on;
    }
}

Nginx Web Socket proxy_pass on subfolder:

server {
	location /test {

	#remove the starting /test
	rewrite /test/(.*) /$1  break;

	# this 3 lines below allow for Web Socket connections!
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;

        proxy_redirect     off;
        proxy_set_header   Host $host;

        proxy_pass http://localhost:3001/;
    }
}

Nginx debugging configuration or displaying variables:

server {
	location ~ \.php$ {
		include fastcgi.conf;
			
		add_header Content-Type text/plain;
		return 200 $document_root$fastcgi_script_name;
	}
}

server {
    server_name domain.tld www.domain.tld;
    root /var/www/wallabag/web;

    location / {
        # try to serve file directly, fallback to app.php
        try_files $uri /app.php$is_args$args;
    }
    location ~ ^/app\.php(/|$) {
        # if, for some reason, you are still using PHP 5,
        # then replace /run/php/php7.0 by /var/run/php5
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        fastcgi_split_path_info ^(.+\.php)(/.*)$;
        include fastcgi_params;
        # When you are using symlinks to link the document root to the
        # current version of your application, you should pass the real
        # application path instead of the path to the symlink to PHP
        # FPM.
        # Otherwise, PHP's OPcache may not properly detect changes to
        # your PHP files (see https://github.com/zendtech/ZendOptimizerPlus/issues/126
        # for more information).
        fastcgi_param  SCRIPT_FILENAME  $realpath_root$fastcgi_script_name;
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        # Prevents URIs that include the front controller. This will 404:
        # http://domain.tld/app.php/some-path
        # Remove the internal directive to allow URIs like this
        internal;
    }

    # return 404 for all other php files not matching the front controller
    # this prevents access to other php files you don't want to be accessible.
    location ~ \.php$ {
        return 404;
    }

    error_log /var/log/nginx/wallabag_error.log;
    access_log /var/log/nginx/wallabag_access.log;
}