v2

• Use checkout@v3
• Use build-push-action@5
• Use complete context for building the image. The build process always lacked access to the .git/ folder.
• Added optional dockerfile input to overwrite the default Dockerfile path
• Add optional image-name-overwrite input to set a custom image name. This might become useful if there are multiple images published from one repository.
• Compile the docker image for amd64 and arm64
• Caching