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A Complete Guide to Deploying a Containerized Application Using Managed Instance Groups (MIGs) in Google Cloud (GCP) with Continuous Integration (CICD) — Part 3

Paulo Carvalho

Photo by Mike Gieson from FreeImages

In the third part of this guide, we will walk through setting up a CICD solution for Docker containerized application such as a Ruby on Rails backend.

Scenario

We want to deploy a web application consisting of one or more frontends using a client side framework such as ReactJS which connects to one (or more) backends that have been containerized with Docker. Our backend will connect to a CloudSQL instance for storage and all environment variables will be encrypted with GCP’s Key Management Service (KMS). GIT commits to a specific branch on GitHub will trigger a build and deploy of the application. A load balancer will direct traffic and serve as a proxy for HTTPS using a managed certificate.

Pre-requisites

Setup the environment proposed in part 1 of this guide or equivalent. Basic understanding of Docker and CloudBuild triggers as shown in part 2.

Step 1: Dockerize the App

Below, we have a Dockerfile (placed in the root of the repository) that creates docker images containing our application’s source code. Note that this…

Paulo Carvalho
Paulo Carvalho

Written by Paulo Carvalho

Want to chat about startups, consulting or engineering? Just send me an email on paulo@avantsoft.com.br.

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