is there any open source project img proxy that can do this? eg: instead of this http://localhost:8080/https://octodex.github.com/images/codercat.jpg http://l

is there any open source project img proxy that can do this? eg: instead of this http://localhost:8080/https://octodex.github.com/images/codercat.jpg http://localhost:8080/https://octodex.github.com/images/code... we can create alias like octo and url will become this http://localhost:8080/octo/images/codercat.jpg http://localhost:8080/octo/images/codercat.jpg