Single Builds Approach

We'll now separately build out these three parts of our app. The approach we are going to take is building the app in our local environment, then dockerizing the app.

Once these are running, we'll connect the three docker containers. Note that we are only building two containers, Angular and the Express/Node API. The third container will be from a MongoDB image that we'll just pull from the Docker Hub.

Docker Hub is a repository for docker images. It's where we pull down official docker images such as MongoDB, NodeJs, Ubuntu, and we can also create custom images and push them to Docker Hub for other people to pull and use.

Let's create a directory for our whole set up, we'll call itmean-docker.

$ mkdir mean-docker