go run src/main.go -src "path/to/images" -templates "path/to/templates"
docker run -v your/path/to/imagesrc:/app/src -v your/path/to/templates:/app/templates ghcr.io/ckroeger/previewer:1.0.1
docker build -t previewer .
docker run -it -v `pwd`:/app previewer /app/app -src "example/images"