@jang430 There is no need to add any extension to the hosts file. I don’t know about creating the config folder but both the hosts and in-vhost.conf files can be anywhere as far I know, as long as the path mappings are accurate in the YAML file. Ideally they are located in your Invoice Ninja docker config folder, same place where your YAML file is.
I believe in5.localhost is fine for your hostname. Should be the same as in the YAML file.
Just as a reference, this is what the relevant sections look like in the docker manifest that I used to bring up the container:
services:
server:
image: nginx
restart: always
env_file: env
volumes:
- .in-vhost.conf:/etc/nginx/conf.d/in-vhost.conf:ro
- ./public:/var/www/app/public:ro
app:
image: invoiceninja/invoiceninja:latest
env_file: env
restart: always
volumes:
- .hosts:/etc/hosts:ro
- ./public:/var/www/app/public:rw,delegated
- ./storage:/var/www/app/storage:rw,delegated
I couldn’t upload the in-vhost.conf file as it’s not allowed in the forum but here’s what’s in it:
server {
listen 80 default_server;
server_name _;
client_max_body_size 100M;
root /var/www/app/public/;
index index.php;
location / {
try_files $uri $uri/ /index.php?$query_string;
}
location = /favicon.ico { access_log off; log_not_found off; }
location = /robots.txt { access_log off; log_not_found off; }
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass app:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors off;
fastcgi_buffer_size 16k;
fastcgi_buffers 4 16k;
}
}
Please note I am not an expert in any of this, just trying to help you 
With your suggestions for host and in-vhost.conf file, it finally worked!!!