build ipa

      - run:
          name: "Generate ipa"
          command: |
            sudo chown -R distiller:staff ../.ionic
            security set-key-partition-list -S apple-tool:,apple:,codesign: -s -k default /Users/distiller/Library/Keychains/MyKeychain.keychain-db
            ionic cordova build ios --release --device --buildConfig ./build.json
            mkdir -p /tmp/ios
            cp -r platforms/ios/build/device/*.ipa /tmp/ios