Optimise your Docker images with Layered JAR

Docker is everywhere in modern software systems, and has become the standard way to package applications. It provides many features, often unexploited. In this presentation, we will see how we can take advantage of layers in Docker to reduce waste. While this is an intermediate-level Docker topic, we try to present it in an accessible and friendly way, and encourage developers of any level of experience to join us!

Meetups

1. Remote - 22nd of September 2020 (recording)

Slides

• 2020-09-22-presentation-remote-meetup.pdf

Examples

• Spring Boot Fat JAR
• Spring Boot Layered JAR
• Micronaut Fat JAR
• Micronaut Layered JAR
• Clojure Fat JAR
• Clojure Layered JAR

Demos

1. Run a Docker image
2. Analyse a Docker image with Dive
3. Build Boot FatJAR Docker image and analyse layers with dive
4. Build Boot layered JAR, extract it and run extracted JAR
5. Create Docker image using Boot layered JAR and analyse it with dive
6. Create Micronaut layered JAR Docker image using distribution ZIP and analyse it with dive
7. Create Clojure layered JAR Docker image using Badigeon and analyse it with dive

Feedback

Feedback makes us better. Please send any feedback to: albert.attard@thoughtworks.com