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Exercise 2: Container

As already explained, the best way to create a new Docker container is to implement a Dockerfile. The given project is a simple Payara Micro application to store and query todo items. Your mission should you decide to accept it is:

  1. Pull the PostgreSQL Docker image (postgres:9-alpine it might also work with postgres:10-alpine but I haven't tested it yet). Have a look at the debug scripts to setup the database correctly (credentials, database name and so on). If you don't want to setup the container in the terminal have a look at Kitematic.

  2. Have a look at the source code if you aren't familiar with Payara (Micro) already.

  3. Try to start the application by running one of the given debug scripts:

    • debug.sh
    • debug.ps1

    Keep in mind that you might have to adopt your configured database settings!

  4. Complete the given empty Dockerfile to be able to create a new local Docker image (and obviously build the image - just being able to do it isn't very helpful at this time)

  5. Create a docker-compose.yml to wire up the given application with a PostgreSQL container (contact me if you can't make any progress with the Dockerfile for the application)