Flutter ci-cd pipeline for ios

Hi.

CodeBuild runs a custom container within AWS.
And you need macOS to build Flutter iOS.
Therefore, you cannot build iOS apps with CodeBuild alone.

First, you need to have an external build server.
If it supports Remote Build, prepare macOS on EC2 and prepare a mechanism (like Jenkins) to receive Remote Build instructions.
Alternatively, you can use an external service as follows.

https://blog.codemagic.io/how-to-develop-and-distribute-ios-apps-without-mac-with-flutter-codemagic_jpn/

Send build instructions from CodeBuild or CodePipeline to an external server.