Re-added github token

Author: Simon Hofmann

ci/prebuild/prebuild.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
 image=opencv4nodejs-ci_$1
 docker build -t $image -f ./Dockerfile --build-arg TAG=$1 ../../
-docker run $image
+docker run $image -e GITHUB_TOKEN=$GITHUB_TOKEN

ci/prebuild/script/run-prebuild.sh

@@ -3,4 +3,4 @@ export OPENCV4NODEJS_DISABLE_AUTOBUILD=1
 echo "Installing dependencies" &&\
 npm install --unsafe-perm &&\
 echo "Running prebuild" &&\
-npm run prebuild
+npm run prebuild -- -u $GITHUB_TOKEN