This approach includes an automated build service that runs your automated test suite, which can usually also deploy the latest changes to the server if the build passes.
By having an extensive test suite that runs automatically after pushing to the remote repository, you can be certain that your new changes didn't break any old functionality.
The build server can deploy the changes automatically if it's set up to do so and the build passes successfully, which removes the need to deploy changes manually after a push to the remote repository.
The build server can also send build status notifications to Slack, emails, and other communication channels. This is useful since all members of your team will be notified if a build or deployment fails.
Since Mina shouldn't be used directly for deployment, we won't go into extreme lengths about it in this article. You can read more about the deployment process with Mina in the README.md of the Mina repository.
Semaphore is the build service we're currently using. Semaphore supports notifications through instant messaging software, emails, and other methods. It also supports automated deployments, which have to be configured separately.
Semaphore uses Mina for deployment in the background, and you can check other projects for details on how to set up deployment.
New projects on Semaphore can only be created by admin users, so if you need to create a new project, be sure to contact your team lead.
Git and continuous delivery
Using continuous delivery for deploying our applications requires some care when handling Git branches.
- The master branch is the production branch, while the develop branch is the staging branch
- Changes should never be committed or pushed to the master branch directly— they should always be merged into master from the develop branch instead
- All changes should be made in a separate branch, created from the develop branch
- When changes are completed and reviewed, they should be merged into the develop branch and deployed to the staging server
- Once the changes have passed any additional checks on the staging server, the develop branch can be merged into the master branch and deployed to production.