Configure nginx reverse proxy with docker and dockerfile

page in preparation

likely the misdirection from nginx reverse proxy is because it sends requests to localhost:8080 but we want to pass it to host:8080 (VPS server) because that is where it finds the other container with website that is listening on port 8080

so we should use bridged docker network

https://serverfault.com/questions/886016/simplest-nginx-reverse-proxy-to-another-container-on-same-host-gives-502-bad-gat