CORS Reverse Proxy

Simple reverse proxy for CORS issue.

... has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

Use Case

• Local development
• When you want to trust the resources of a other container
  • ex. minio, draw.io, piwigo etc ...

Usage

docker pull kaishuu0123/cors-reverse-proxy

docker run -it -d \
  -e CORS_REVERSE_PROXY_TARGET_URL=http://httpbin.org \
  -e CORS_REVERSE_PROXY_HOST=0.0.0.0 \
  -p 8181:8081 \
  --name cors-reverse-proxy \
  kaishuu0123/cors-reverse-proxy

or

go build

./cors-reverse-proxy \
  --target-url http://httpbin.org \
  --host 0.0.0.0
  --port 8888

Command Line Options & Environment Variables

CLI Option(Long)	Shorthand	Environment Variables	Example	Default
--target-url	-t	CORS_REVERSE_PROXY_TARGET_URL	http://example.com/
--host	-h	CORS_REVERSE_PROXY_HOST	0.0.0.0	localhost
--port	-p	CORS_REVERSE_PROXY_PORT	8888	8081
--origin	-o	CORS_REVERSE_PROXY_ORIGIN	http://example.com/	*
--debug				false

Inspired by

• https://github.com/LordotU/local-cors-proxy-go/