ios: expose signing keychain to xcodebuild

.gitea/workflows/testflight-release.yml

@@ -94,6 +94,7 @@ jobs:
           security set-keychain-settings -lut 21600 "${keychain_path}"
           security unlock-keychain -p "${keychain_password}" "${keychain_path}"
           security list-keychains -d user -s "${keychain_path}" $(security list-keychains -d user | sed 's/[ "]//g')
+          security default-keychain -s "${keychain_path}"
           security import ios/build/secrets/appstore-signing.p12 \
             -k "${keychain_path}" \
             -P "${APPSTORE_CERTIFICATES_PASSWORD}" \
@@ -101,6 +102,8 @@ jobs:
             -T /usr/bin/security \
             -T /usr/bin/xcodebuild
           security set-key-partition-list -S apple-tool:,apple:,codesign: -s -k "${keychain_password}" "${keychain_path}"
+          security find-identity -v -p codesigning "${keychain_path}"
+          echo "SYBIL_SIGNING_KEYCHAIN_PATH=${keychain_path}" >> "${GITHUB_ENV}"
 
       - name: Build and upload to TestFlight
         working-directory: ios