Add vary header

Merge pull request #8 from Hipo/add-accept-header-to-vary

Add vary header, add GitHub Actions for docker image builds

Support files that doesn't have extensions in the name

With this release, Prism allows clients to request files without extensions in the name.
The extension can be: .png, .jpg, .jpeg, .gif, .webp, or empty.

Add .webp support

Accepts .webp images as input image and provides .webp image processing functionality.

Related issue: #4
Related PR: #5

Add basic gif support

Add basic gif support. It is just a simple passthrough fow now, If the input and output is GIF it will just return (a redirect to) the original file.

Related issue: #1
Related PR: #3

v1.0.2

Merge pull request #2 from Hipo/add-ability-to-change-write-bucket-na…

v1.0.0

Update readme with dockerhub version badge

v1.0.0-rc1

Add sample nginx configuration