Spring PetClinic Dockerized

Demo of taking the petclinic Java app and adding the proper Docker files to make it easier for dev, test, and prod.

Check the pet-clinic-app/Dockerfile for multi-stage building of a .jar with maven

Check the docker-compose.yml for a full-featured Dev setup with depends_on using true "wait-for-it" style dependency startup

Bugs

• This currently seems to skip startup of the sprint-petclinic-client frontend, or at least missing a lot of static assets (js/css). PR's welcome (not sure if it's an app issue, or a docker build/run issue)

Features

• Multi-stage Dockerfile with a build, security scan, and prod stage
• docker-compose.yml file with proper waiting of database startup

Other Docker and Compose Tips

1. Use ssh to easily control a Docker Engine on another OS

   Here's an example of pointing docker and docker compose at a remote docker engine. Also works for using docker cli on host OS while docker runs in Vagrant or any VM.

   DOCKER_HOST=ssh://user@host docker image ls

   DOCKER_HOST=ssh://user@host docker-compose up

2. Enable BuildKit in Docker and Compose

   This may speed up your builds and provides advanced features.

   export DOCKER_BUILDKIT=1
   export COMPOSE_DOCKER_CLI_BUILD=1