Mary Poppins

A simple crud app to test out Javalin with Pebble templating. Additionally this project can be deployed via the Dockerfile to Heroku.

With added super kicks!

How to deploy a Kotlin app to Heroku via Docker

Dependencies:

• Maven command line tools 3.6.3+
• Docker and command line tools 19.0.3+
• Heroku CLI 7.40.0+
• All other dependencies included in the pom.xml file - including the required Maven Shade Plugin

1. Compile the project

Once you have opened up the project, execute mvn package in the terminal ensuring you are in the root of your project.

This should create a .jar file of the format {projectName-versionDeclaredInPOM}-shaded.jar in this case it is MaryPoppins/MaryPoppins-1.0-SNAPSHOT-shaded.jar

2. Build the docker container

Again ensuring you are in the root of your project, build the docker image using the included Dockerfile:

docker build [-t {name} *optional*] .

You can test the app boots up in the docker container locally by running

docker run -p 7000:7000 {name or docker image id}

3. Deploy to Heroku

Once you are happy that it works locally, login to Heroku via the CLI:

heroku login

Additionally we want to navigate to the Heroku Container Registry:

heroku container:login

Create an app in Heroku where you docker image will be pushed to:

heroku create {app name}

You can then push the docker image as follows:

heroku container:push web --app={app name created in heroku}

Once that it successful, you can then release the app like so:

heroku container:release web --app={app name created in heroku}