CircleCI Config YAML

config.yml

jobs:
  # ...
  make_build:
    macos:
      xcode: "9.2.0"
    steps:
      - checkout
      # ...
      - run:
          name: decode Certificates
          context: org-global
          command: base64 -D -o Certificates.p12 <<< $Certificates
      - run:
          name: make Provisioning Profiles directory
          command: mkdir -pv ~/Library/MobileDevice/Provisioning\ Profiles/
      - run:
          name: decode Provisioning Profiles
          context: org-global
          command: base64 -D -o ~/Library/MobileDevice/Provisioning\ Profiles/App_Store.mobileprovision <<< $App_Store_Profile
      # ...

Thanks for your quick answer, Marat! And for taking the time of writing the post.
I did that.
base64 -i MyAPP_App_Store_Provisioning.mobileprovision | pbcopy
Then I create a environment variable with the name App_Store_Profile and the value of the previous output.

This is the content of my Fastfile

default_platform :ios

platform :ios do

  before_all do
    setup_circle_ci
    import_certificate(
      keychain_name: ENV["MATCH_KEYCHAIN_NAME"],
      keychain_password: ENV["MATCH_KEYCHAIN_PASSWORD"],
      certificate_path: 'Certificates.p12',
      certificate_password: ENV["CERTIFICATE_PASSWORD"] || "default"
    )
  end

  desc "Build"
  lane :test do
    build_app(workspace: "MyApp.xcodeproj/project.xcworkspace", scheme: "MyApp")
  end

end

And when I run the lane test, here starts the error

[16:33:00]: $ set -o pipefail && xcodebuild -workspace MyApp.xcodeproj/project.xcworkspace -scheme MyApp -destination 'generic/platform=iOS' -archivePath /Users/distiller/Library/Developer/Xcode/Archives/2020-04-16/MyApp\ 2020-04-16\ 16.33.00.xcarchive archive | tee /Users/distiller/project/output/buildlogs/gym/MyApp-MyApp.log | xcpretty
[16:33:20]: ▸ ❌  error: No profiles for 'com.mytestingdomain.ios.myapp' were found: Xcode couldn't find any iOS App Development provisioning profiles matching 'com.mytestingdomain.ios.myapp'. Automatic signing is disabled and unable to generate a profile. To enable automatic signing, pass -allowProvisioningUpdates to xcodebuild. (in target 'MyApp' from project 'MyApp')
[16:33:20]: ▸ ** ARCHIVE FAILED **

I also tried passing this to build_app

      export_method: "app-store",
      export_options: {
        provisioningProfiles: { 
          "com.mytestingdomain.ios.myapp" => "Name of the Provisioning Profile"
        }
      }  

I also tried passing -allowProvisioningUpdates

Any hint? Thanks a lot

But it is not working.

It seems the prov. profile doesn't match to the build step. It should match by bundle id, but also by the purpose of the build. Thus, prov. profile for the App Store distribution cannot be used for testing builds. But only for the App Store distribution.

I have the same issue as you @bunchito did you manage to solve this? I've tried mentioned solutions but had no luck