Created workflows for Terragrunt deploy and plan.

Change Summary

This update introduces two new GitHub Actions workflows (deploy.yml and plan.yml) for deploying and planning infrastructure changes using Terragrunt, along with a configuration file (mise.toml) specifying the versions of Terragrunt and OpenTofu.

Technical Details

• deploy.yml:
  • Triggered on workflow_dispatch and push to the main branch.
  • Includes jobs for checking Terragrunt HCL and deploying infrastructure.
  • Uses gruntwork-io/terragrunt-action for HCL checks and deployment.
  • Configures AWS credentials and uses Tailscale for secure networking.
• plan.yml:
  • Triggered on workflow_dispatch and various pull_request events on the main branch.
  • Includes jobs for checking Terragrunt HCL and planning infrastructure changes.
  • Similar setup to deploy.yml but runs terragrunt plan instead of apply.
• mise.toml:
  • Specifies the versions of Terragrunt (0.91.1) and OpenTofu (1.11.1).

Key Learnings & Insights

• Automation: The introduction of these workflows automates the deployment and planning processes, reducing manual intervention and potential errors.
• Version Control: Using mise.toml to specify tool versions ensures consistency across environments.
• Security: Configuring AWS credentials and using Tailscale enhances the security of the deployment process.

Impact Assessment

• Efficiency: Automates repetitive tasks, allowing developers to focus on more complex issues.
• Consistency: Ensures that the same versions of tools are used across different environments.
• Security: Improves the security posture by managing credentials and network configurations effectively.

Developer Notes

• Environment Variables: Ensure that all necessary secrets (TS_OAUTH_CLIENT_ID, TS_OAUTH_SECRET) are correctly set in the GitHub repository settings.
• Dependency Management: Keep an eye on updates for Terragrunt and OpenTofu to benefit from new features and security patches.
• Future Improvements: Consider adding additional checks or notifications for failed deployments or plans.