use strict channel priority
MODIFY
repo2docker/buildpacks/conda/install-base-env.bash
repo2docker/buildpacks/conda/install-base-env.bash
@@ -33,7 +33,7 @@ channels:
auto_update_conda: false
show_channel_urls: true
update_dependencies: false
-channel_priority: flexible
+channel_priority: strict
EOT
echo "installing notebook env:"

use strict channel priority