This docker image will proxy all HTTP requests on port 80 to the root path specified in the
PROXY_UPSTREAM environment variable.
The entire URI will be sent to the redirected path like this:
PROXY_UPSTREAM is set to
/ => https://www.mydomain.com/ /asdf => https://www.mydomain.com/asdf /asdf?asdf=1 => https://www.mydomain.com/asdf?asdf=1
docker run -p 3000:80 -e "PROXY_UPSTREAM=https://www.mydomain.com" aldryn/docker-proxy