Support alternative http code for PUT, PATCH and DELETE methods

Fix to see X-Forwarded-Proto for redirect scheme

allow overriding the default access log and error log locations

allow 301, 302, 303, 307 or 308 as HTTP Status Codes used for redirect

optionally define different status code for POST requests, cherry picked from https://github.com/schmunk42/docker-nginx-redirect/pull/8

Add SERVER_NAME variable

remove shells to make nginx the main process of the container

added possiblity to specify redirection code

Added support for a configurable scheme

Added support for a configurable scheme, either http or https will at least work others might

Fixes: #3

Signed-off-by: Martin van Wingerden <martinw@martinvw.nl>

change base nginx image tag to alpine 

added optional SERVER_REDIRECT_PATH Env

added optional SERVER_REDIRECT_PATH Env Var to be able to define destination URL-Path for all source URLs