Run Nginx on WSL (Ubuntu on Windows) with automatic domain names and environment for local development

etc_nginx_sites-enabled_test

server {
    listen 80;
    listen 443 ssl http2;

	# make yourself an SSL certificate for *.test.test (and your dhparam file if you're so inclined)

	ssl_certificate      /etc/nginx/ssl/test.cert;
	ssl_certificate_key  /etc/nginx/ssl/test.key;
	# your other favourite SSL settings go here

    server_name ~((?<environment>[\w-]+)\.)?(?<domain>[\w-]+)\.test\.test$;
    root /mnt/c/path/to/your/websites/$domain/html;

    if ($environment = '') {
        set $environment development;
    }

    index index.php;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param FUEL_ENV $environment;
        include fastcgi_params;
    }
}

etc_nginx_ssl_makecert.sh

#!/bin/bash

mkdir /etc/nginx/ssl && cd /etc/nginx/ssl

openssl req -new -x509 -nodes -sha256 -days 3650 -newkey rsa:2048 -keyout test.key -out test.cert -subj "/CN=*.test.test" -extensions SAN -config <(
cat <<-EOF
[req]
distinguished_name=dn

[dn]
CN=*.test.test

[SAN]
subjectAltName=DNS:*.test.test
EOF
)

etc_php_7.1_fpm_pool.d_test.conf

[test]
user = www-data
group = www-data

; WSL (Ubuntu on Windows) currently has problems with socket ownership so use the port instead
; you should also disable, remove, or replace the default pool config to avoid errors in your PHP log
; related: https://github.com/Microsoft/WSL/issues/393#issuecomment-284755257
listen = 127.0.0.1:9000

pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3

Chrome 63 officially HSTS'es the .dev domain so better to use .test instead

If you're using a certificate, Chrome will not automatically trust a wildcard TLD so I've gone with .test.test. The certificate can then be imported to your computer certificate store under Trusted Root Certification Authorities.