Basic info + Prerequisities

• It is assumed that the app is already prepared - Prepare app for 1st release
• There are infinite options how to setup CI, this tutorial showcases just one example based on Matee DevStack
• It consists from the fastlane configuration and runs via GitHub Actions on self-hosted runners (most common setup for our projects)
• If the project requires something else you have to adjust the setup by yourself (just UTFG 🙃)

1) Create a Development certificate

• For its simplicity we are usually using Xcode Cloud Signing for CI builds - we partially sign the build with a Development certificate and Xcode Cloud Signing then completes the signing for Distribution, you can find more details in this WWDC session
• In CI environment you can get a clean instance for every build, therefore we have to create and store the Development certificate in the repository
• Open Keychain Access on your Mac and go to Certificate Assistant - Request a Certificate From a Certificate Authority

• Fill in the request and save the CertificateSigningRequest somewhere.
• It doesn't matter what information you fill in, but for consistency prefer Matee Fastlane / [email protected]

• Go to the Apple Developer portal and create a new Apple Development certificate
• You will have to upload the previously created CertificateSigningRequest, after that download the newly created certificate

• Import the downloaded .cer to the Keychain Access by double click
• Find the certificate in the Keychain Access (sort by expiration) and export its .p12 by right click and selecting Export