A simple command line tool to optimize pictures for web in one go.
mvn package
java -cp target/deps/pngtastic-1.0.jar -jar target/image-web-optimizer-0.0.2-SNAPSHOT.jar will give help
Your task: Create an alpine-jre based docker image that will automatically minimize all images found in (volume) "/in" and write them to (volume) "/out"
Note: Some sample pictures can be found in the imgs folder