Deploying a Flask and React Microservice to AWS EC2

Objectives

Part 1

Create a production Dockerfile that uses multistage Docker builds
Utilize Amazon Elastic Container Registry (ECR) to store built images
Configure CodeBuild to run when code is checked in to GitHub
Run unit and integrations tests and check code for quality and formatting issues on CodeBuild

Part 2

Configure RDS for data persistence
Configure an Application Load Balancer (ALB) along with ECS to run a set of microservices
Send container logs to CloudWatch
Update a running container via a zero-downtime deployment strategy to not disrupt the current users your application
Use AWS Fargate with ECS to deploy a microservice
Spin up AWS infrastructure via Terraform

ISSUES WITH MAC M1:

Requirements.txt file:
- can't include psycopg2-binary == 2.9.3 due to libpq version 10 issue
- instead include this as part of your dependencies in your Dockerfile:
```
RUN apt update -y \
&& apt install -y build-essential libpq-dev

RUN pip3 install psycopg2-binary --no-binary psycopg2-binary
```
When deploying on Fargate, must indicate "--platform=linux/amd64" in your Dockerfile:
- example:
```
FROM --platform=linux/amd64 public.ecr.aws/docker/library/node:18-alpine as builder
```

Issues Hot Loading with React-Script 5.x.x

If browser is trying to open a websocket back to the node server to ws://localhost:3000 add the following as an environment variable:

WDS_SOCKET_PORT=0