Continuous Delivery with GitLab and Convox

What this post added

This post details the integration of GitLab with Convox for Continuous Delivery (CD). It explains how to set up a Convox deployment environment on AWS, authorize Convox with GitLab and Slack, and leverage GitLab webhooks and deploy keys to automate builds, tests, and deployments. It also provides an example of a `.gitlab-ci.yml` file for integrating automated testing with Convox deployments.