Slides

https://docs.google.com/presentation/d/1cg5Mo5xsDh_Y0DjVHx-wl94zDsmk1itiagyS7TTrKMM/edit?usp=sharing

Learning Objectives

• Understand the benefits of decomposing apps into multiple containers.
• Learn how to write a Docker Compose file.
• Use networking to achieve container isolation, improving security.

Installation and Setup

• Install Docker if you haven’t already.
• Fork the GitHub repository.
• Check out branch Section-2-Microservices-with-Docker-Compose .

Create requirements.txt

We will first define the dependencies needed to run our application. Copy the text below and save it into a file called requirements.txt in docker-kubernetes-series/Section 2 - Microservices-with-Docker-Copmpose.

fastapi==0.81.*
httpx==0.23.*
prophet==1.1.*
psycopg2-binary==2.9.*
python-dotenv==0.21.*
requests==2.26.*
sqlmodel==0.0.*
uvicorn[standard]==0.18.*

Running with Docker Compose

While it was great to have our application running in a Docker container, there was quite a bit of functionality packed into a single container. We want to break this up into multiple services to ease the burden of development. You can find the code for our services as well as the Dockerfiles in the preprocess and predict folders.

We will also be loading the data into a Postgres SQL database instead of copying a CSV file directly into the container. This will contain the features that we will use for predictions.

Finally, we will define our virtual networks to provide container isolation and improved security.