Forward GitHub token to docker build if it exists

scripts/ci.bash

@@ -5,6 +5,7 @@ set -euo pipefail
 function docker-build() {
 	local target="${TARGET:-}"
 	local image="codercom/nbin-${target}"
+	local token="${GITHUB_TOKEN:-}"
 	if [[ "${target}" == "linux" ]] ; then
 		image="codercom/nbin-centos"
 	fi
@@ -26,7 +27,7 @@ function docker-build() {
 		local command="${1}" ; shift
 		local args="'${vscodeVersion}' '${codeServerVersion}' '${target}'"
 		docker exec "${containerId}" \
-			bash -c "cd /src && CI=true yarn ${command} ${args}"
+			bash -c "cd /src && CI=true GITHUB_TOKEN=${token} yarn ${command} ${args}"
 	}
 
 	docker cp ./. "${containerId}":/src