Design provisioning and deployment of a docker based web app in a cloud.

Let's assume that there's only one container started from the docker hub nginx image. And lets imagine that it uses a mysql database to store data.

So the app itself and it's deployment looks something like the following:

flowchart TD
  User[Browser] --> |http/https request| LB;
  LB[Load Balancer] -->|http request| ec1[instance1];
  LB -->|http| ec2[instance2];
  ec1 <--> DB[(Data Base)];
  ec2 <--> DB;
  
  Registry --> |docker pull app image| CD;
  CI --> |docker push app image| Registry;
  CD --> |deploy| ec1 & ec2
  

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Or the app and CI/CD separately.

flowchart TD
  User[Browser] --> |http/https| LB;
  LB[Load Balancer] -->|http| ec1[instance1];
  LB -->|http| ec2[instance2];
  ec1 <--> DB[(Data Base)];
  ec2 <--> DB;

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flowchart TD
  Registry --> |docker pull app image| CD;
  CI --> |docker push app image| Registry;
  CD --> |deploy| ec1[instance1] & ec2[instance2]
  

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Please create the infrastructure as code leaving out the actual CI and CD. You can pick the tools/languages and underlying cloud that you are most comfortable with. This is a practical task, so some IaC or configs/scripts are required.

You are not expected to be thorough, but pick parts that make most sense to go into a code repository in your opinion. Making assumptions and cutting corners is fine. Please document the decision making related to that.

You can submit your code/comments as a pull request to this repository.