Docker development environment sample app

This is a sample application that demonstrates using Docker to containerise your development environment.

Prerequisites

• Docker (Should work fine with any recent version of Docker, I've tested this with Docker for Mac version 1.13.0-rc4-beta34.1)

Note that this won't work in its current state on Windows as it uses a Bash shell script. If the shell script was translated to something that runs on Windows there should be no problems.

Usage

Initial / first time setup

Nothing to do - everything will be downloaded when you run the build for the first time.

Building

Run ./build.sh. This will compile, test and package the application, which will be placed in build/libs/docker-dev-env-sample-app.jar.

If any required components are missing or out-of-date, they'll be updated automatically.

If you want to run a different task, you can override the command used. For example, to just compile and test the app without packaging, run ./build.sh ./gradlew build.

Modifying the build environment

The build runs in a Docker container based on the Dockerfile in the dev-env folder. (This is the magic that build.sh is doing in the background for you.) If you want to change something about the build environment (eg. upgrade Java or add a new tool), modify the Dockerfile as necessary and subsequent builds will pick up the changes automatically.