update windows to add Google gtsr1 root cert for futur proofing pub get calls to pub.dartlang.org

README.md

@@ -3,6 +3,7 @@
 These docker containers are built on containers from [cirrusci](https://hub.docker.com/u/cirrusci) ([cirruslabs](https://github.com/cirruslabs)).
 
 - linux-dev is just cirrusci/flutter:dev + apt installing the needed utils
+- windows-dev-sdk30-fdev2.3rc is cirrusci/android-sdk:30-windowsservercore-2019 with Visual Studio 16, Flutter dev (2.3rc), and Google Root cert gtsr1 (for future proofing pub get)
 - windows-dev-sdk30-fdev2.2rc is cirrusci/android-sdk:30-windowsservercore-2019 with Visual Studio 16, and Flutter dev (2.2rc)
 
 These docker containers are both being used with Drone CI to build Flutter desktop apps for Linux and Windows. Simply run `flutter build` with the appropriate OS. These containers should work with any other Docker based automated build system such as Gitlab and others.

windows/Dockerfile

@@ -24,6 +24,12 @@ RUN C:\TEMP\vs_buildtools.exe --quiet --wait --norestart --nocache \
     --installPath C:\BuildTools \
      || IF "%ERRORLEVEL%"=="3010" EXIT 0
 
+# Install Google Root R1 cert so pub.dartlang.org stays working
+
+ADD https://pki.goog/repo/certs/gtsr1.pem C:/TEMP/gtsr1.pem
+RUN powershell.exe -Command \
+        Import-Certificate -FilePath C:\TEMP\gtsr1.pem -CertStoreLocation Cert:\LocalMachine\Root
+
 # Install Flutter
 
 RUN setx path "%path%;C:\flutter\bin;C:\flutter\bin\cache\dart-sdk\bin;"